961 lines
16 KiB
JavaScript
961 lines
16 KiB
JavaScript
/**
|
|
* author: Timothy Groves - http://www.brandspankingnew.net
|
|
* version: 1.2 - 2006-11-17
|
|
* 1.3 - 2006-12-04
|
|
* 2.0 - 2007-02-07
|
|
*
|
|
*/
|
|
|
|
var useBSNns;
|
|
|
|
if (useBSNns)
|
|
{
|
|
if (typeof(bsn) == "undefined")
|
|
bsn = {}
|
|
_bsn = bsn;
|
|
}
|
|
else
|
|
{
|
|
_bsn = this;
|
|
}
|
|
|
|
|
|
|
|
if (typeof(_bsn.Autosuggest) == "undefined")
|
|
_bsn.Autosuggest = {}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest = function (fldID, param)
|
|
{
|
|
// no DOM - give up!
|
|
//
|
|
if (!document.getElementById)
|
|
return false;
|
|
|
|
|
|
|
|
|
|
// get field via DOM
|
|
//
|
|
this.fld = _bsn.DOM.getElement(fldID);
|
|
|
|
if (!this.fld)
|
|
return false;
|
|
|
|
|
|
|
|
|
|
// init variables
|
|
//
|
|
this.sInput = "";
|
|
this.nInputChars = 0;
|
|
this.aSuggestions = [];
|
|
this.iHighlighted = 0;
|
|
|
|
|
|
|
|
|
|
// parameters object
|
|
//
|
|
this.oP = (param) ? param : {};
|
|
|
|
// defaults
|
|
//
|
|
if (!this.oP.minchars) this.oP.minchars = 1;
|
|
if (!this.oP.method) this.oP.meth = "get";
|
|
if (!this.oP.varname) this.oP.varname = "input";
|
|
if (!this.oP.className) this.oP.className = "autosuggest";
|
|
if (!this.oP.timeout) this.oP.timeout = 2500;
|
|
if (!this.oP.delay) this.oP.delay = 500;
|
|
if (!this.oP.offsety) this.oP.offsety = -5;
|
|
if (!this.oP.shownoresults) this.oP.shownoresults = true;
|
|
if (!this.oP.noresults) this.oP.noresults = "No results!";
|
|
if (!this.oP.maxheight && this.oP.maxheight !== 0) this.oP.maxheight = 250;
|
|
if (!this.oP.cache && this.oP.cache != false) this.oP.cache = true;
|
|
|
|
|
|
|
|
|
|
|
|
// set keyup handler for field
|
|
// and prevent autocomplete from client
|
|
//
|
|
var pointer = this;
|
|
|
|
// NOTE: not using addEventListener because UpArrow fired twice in Safari
|
|
//_bsn.DOM.addEvent( this.fld, 'keyup', function(ev){ return pointer.onKeyPress(ev); } );
|
|
|
|
this.fld.onkeypress = function(ev){ return pointer.onKeyPress(ev); }
|
|
this.fld.onkeyup = function(ev){ return pointer.onKeyUp(ev); }
|
|
|
|
this.fld.setAttribute("autocomplete","off");
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.onKeyPress = function(ev)
|
|
{
|
|
|
|
var key = (window.event) ? window.event.keyCode : ev.keyCode;
|
|
|
|
|
|
|
|
// set responses to keydown events in the field
|
|
// this allows the user to use the arrow keys to scroll through the results
|
|
// ESCAPE clears the list
|
|
// TAB sets the current highlighted value
|
|
//
|
|
var RETURN = 13;
|
|
var TAB = 9;
|
|
var ESC = 27;
|
|
|
|
var bubble = true;
|
|
|
|
switch(key)
|
|
{
|
|
|
|
case RETURN:
|
|
this.setHighlightedValue();
|
|
bubble = false;
|
|
break;
|
|
|
|
|
|
case ESC:
|
|
this.clearSuggestions();
|
|
break;
|
|
}
|
|
|
|
return bubble;
|
|
}
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.onKeyUp = function(ev)
|
|
{
|
|
var key = (window.event) ? window.event.keyCode : ev.keyCode;
|
|
|
|
|
|
|
|
// set responses to keydown events in the field
|
|
// this allows the user to use the arrow keys to scroll through the results
|
|
// ESCAPE clears the list
|
|
// TAB sets the current highlighted value
|
|
//
|
|
|
|
var ARRUP = 38;
|
|
var ARRDN = 40;
|
|
|
|
var bubble = true;
|
|
|
|
switch(key)
|
|
{
|
|
|
|
|
|
case ARRUP:
|
|
this.changeHighlight(key);
|
|
bubble = false;
|
|
break;
|
|
|
|
|
|
case ARRDN:
|
|
this.changeHighlight(key);
|
|
bubble = false;
|
|
break;
|
|
|
|
|
|
default:
|
|
this.getSuggestions(this.fld.value);
|
|
}
|
|
|
|
return bubble;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.getSuggestions = function (val)
|
|
{
|
|
|
|
// if input stays the same, do nothing
|
|
//
|
|
if (val == this.sInput)
|
|
return false;
|
|
|
|
|
|
// input length is less than the min required to trigger a request
|
|
// reset input string
|
|
// do nothing
|
|
//
|
|
if (val.length < this.oP.minchars)
|
|
{
|
|
this.sInput = "";
|
|
return false;
|
|
}
|
|
|
|
|
|
// if caching enabled, and user is typing (ie. length of input is increasing)
|
|
// filter results out of aSuggestions from last request
|
|
//
|
|
if (val.length>this.nInputChars && this.aSuggestions.length && this.oP.cache)
|
|
{
|
|
var arr = [];
|
|
for (var i=0;i<this.aSuggestions.length;i++)
|
|
{
|
|
if (this.aSuggestions[i].value.substr(0,val.length).toLowerCase() == val.toLowerCase())
|
|
arr.push( this.aSuggestions[i] );
|
|
}
|
|
|
|
this.sInput = val;
|
|
this.nInputChars = val.length;
|
|
this.aSuggestions = arr;
|
|
|
|
this.createList(this.aSuggestions);
|
|
|
|
|
|
|
|
return false;
|
|
}
|
|
else
|
|
// do new request
|
|
//
|
|
{
|
|
this.sInput = val;
|
|
this.nInputChars = val.length;
|
|
|
|
|
|
var pointer = this;
|
|
clearTimeout(this.ajID);
|
|
this.ajID = setTimeout( function() { pointer.doAjaxRequest() }, this.oP.delay );
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.doAjaxRequest = function ()
|
|
{
|
|
|
|
var pointer = this;
|
|
|
|
// create ajax request
|
|
var url = this.oP.script+this.oP.varname+"="+escape(this.fld.value);
|
|
var meth = this.oP.meth;
|
|
|
|
var onSuccessFunc = function (req) { pointer.setSuggestions(req) };
|
|
var onErrorFunc = function (status) { alert("AJAX error: "+status); };
|
|
|
|
var myAjax = new _bsn.Ajax();
|
|
myAjax.makeRequest( url, meth, onSuccessFunc, onErrorFunc );
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.setSuggestions = function (req)
|
|
{
|
|
this.aSuggestions = [];
|
|
|
|
if (this.oP.json)
|
|
{
|
|
var jsondata = eval('(' + req.responseText + ')');
|
|
|
|
for (var i=0;i<jsondata.results.length;i++)
|
|
{
|
|
this.aSuggestions.push( { 'id':jsondata.results[i].id, 'value':jsondata.results[i].value, 'info':jsondata.results[i].info } );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
var xml = req.responseXML;
|
|
|
|
// traverse xml
|
|
//
|
|
var results = xml.getElementsByTagName('results')[0].childNodes;
|
|
|
|
for (var i=0;i<results.length;i++)
|
|
{
|
|
if (results[i].hasChildNodes())
|
|
this.aSuggestions.push( { 'id':results[i].getAttribute('id'), 'value':results[i].childNodes[0].nodeValue, 'info':results[i].getAttribute('info') } );
|
|
}
|
|
|
|
}
|
|
|
|
this.idAs = "as_"+this.fld.id;
|
|
|
|
|
|
this.createList(this.aSuggestions);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.createList = function(arr)
|
|
{
|
|
var pointer = this;
|
|
|
|
|
|
// get rid of old list
|
|
// and clear the list removal timeout
|
|
//
|
|
_bsn.DOM.removeElement(this.idAs);
|
|
this.killTimeout();
|
|
|
|
|
|
// create holding div
|
|
//
|
|
var div = _bsn.DOM.createElement("div", {id:this.idAs, className:this.oP.className});
|
|
|
|
var hcorner = _bsn.DOM.createElement("div", {className:"as_corner"});
|
|
var hbar = _bsn.DOM.createElement("div", {className:"as_bar"});
|
|
var header = _bsn.DOM.createElement("div", {className:"as_header"});
|
|
header.appendChild(hcorner);
|
|
header.appendChild(hbar);
|
|
div.appendChild(header);
|
|
|
|
|
|
|
|
|
|
// create and populate ul
|
|
//
|
|
var ul = _bsn.DOM.createElement("ul", {id:"as_ul"});
|
|
|
|
|
|
|
|
|
|
// loop throught arr of suggestions
|
|
// creating an LI element for each suggestion
|
|
//
|
|
for (var i=0;i<arr.length;i++)
|
|
{
|
|
// format output with the input enclosed in a EM element
|
|
// (as HTML, not DOM)
|
|
//
|
|
var val = arr[i].value;
|
|
var st = val.toLowerCase().indexOf( this.sInput.toLowerCase() );
|
|
var output = val.substring(0,st) + "<em>" + val.substring(st, st+this.sInput.length) + "</em>" + val.substring(st+this.sInput.length);
|
|
|
|
|
|
var span = _bsn.DOM.createElement("span", {}, output, true);
|
|
if (arr[i].info != "")
|
|
{
|
|
var br = _bsn.DOM.createElement("br", {});
|
|
span.appendChild(br);
|
|
var small = _bsn.DOM.createElement("small", {}, arr[i].info);
|
|
span.appendChild(small);
|
|
}
|
|
|
|
var a = _bsn.DOM.createElement("a", { href:"#" });
|
|
|
|
var tl = _bsn.DOM.createElement("span", {className:"tl"}, " ");
|
|
var tr = _bsn.DOM.createElement("span", {className:"tr"}, " ");
|
|
a.appendChild(tl);
|
|
a.appendChild(tr);
|
|
|
|
a.appendChild(span);
|
|
|
|
a.name = i+1;
|
|
a.onclick = function () { pointer.setHighlightedValue(); return false; }
|
|
a.onmouseover = function () { pointer.setHighlight(this.name); }
|
|
|
|
var li = _bsn.DOM.createElement( "li", {}, a );
|
|
|
|
ul.appendChild( li );
|
|
}
|
|
|
|
|
|
// no results
|
|
//
|
|
if (arr.length == 0)
|
|
{
|
|
var li = _bsn.DOM.createElement( "li", {className:"as_warning"}, this.oP.noresults );
|
|
|
|
ul.appendChild( li );
|
|
}
|
|
|
|
|
|
div.appendChild( ul );
|
|
|
|
|
|
var fcorner = _bsn.DOM.createElement("div", {className:"as_corner"});
|
|
var fbar = _bsn.DOM.createElement("div", {className:"as_bar"});
|
|
var footer = _bsn.DOM.createElement("div", {className:"as_footer"});
|
|
footer.appendChild(fcorner);
|
|
footer.appendChild(fbar);
|
|
div.appendChild(footer);
|
|
|
|
|
|
|
|
// get position of target textfield
|
|
// position holding div below it
|
|
// set width of holding div to width of field
|
|
//
|
|
var pos = _bsn.DOM.getPos(this.fld);
|
|
|
|
div.style.left = pos.x + "px";
|
|
div.style.top = ( pos.y + this.fld.offsetHeight + this.oP.offsety ) + "px";
|
|
div.style.width = this.fld.offsetWidth + "px";
|
|
|
|
|
|
|
|
// set mouseover functions for div
|
|
// when mouse pointer leaves div, set a timeout to remove the list after an interval
|
|
// when mouse enters div, kill the timeout so the list won't be removed
|
|
//
|
|
div.onmouseover = function(){ pointer.killTimeout() }
|
|
div.onmouseout = function(){ pointer.resetTimeout() }
|
|
|
|
|
|
// add DIV to document
|
|
//
|
|
document.getElementsByTagName("body")[0].appendChild(div);
|
|
|
|
|
|
|
|
// currently no item is highlighted
|
|
//
|
|
this.iHighlighted = 0;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// remove list after an interval
|
|
//
|
|
var pointer = this;
|
|
this.toID = setTimeout(function () { pointer.clearSuggestions() }, this.oP.timeout);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.changeHighlight = function(key)
|
|
{
|
|
var list = _bsn.DOM.getElement("as_ul");
|
|
if (!list)
|
|
return false;
|
|
|
|
var n;
|
|
|
|
if (key == 40)
|
|
n = this.iHighlighted + 1;
|
|
else if (key == 38)
|
|
n = this.iHighlighted - 1;
|
|
|
|
|
|
if (n > list.childNodes.length)
|
|
n = list.childNodes.length;
|
|
if (n < 1)
|
|
n = 1;
|
|
|
|
|
|
this.setHighlight(n);
|
|
}
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.setHighlight = function(n)
|
|
{
|
|
var list = _bsn.DOM.getElement("as_ul");
|
|
if (!list)
|
|
return false;
|
|
|
|
if (this.iHighlighted > 0)
|
|
this.clearHighlight();
|
|
|
|
this.iHighlighted = Number(n);
|
|
|
|
list.childNodes[this.iHighlighted-1].className = "as_highlight";
|
|
|
|
|
|
this.killTimeout();
|
|
}
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.clearHighlight = function()
|
|
{
|
|
var list = _bsn.DOM.getElement("as_ul");
|
|
if (!list)
|
|
return false;
|
|
|
|
if (this.iHighlighted > 0)
|
|
{
|
|
list.childNodes[this.iHighlighted-1].className = "";
|
|
this.iHighlighted = 0;
|
|
}
|
|
}
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.setHighlightedValue = function ()
|
|
{
|
|
if (this.iHighlighted)
|
|
{
|
|
this.sInput = this.fld.value = this.aSuggestions[ this.iHighlighted-1 ].value;
|
|
|
|
// move cursor to end of input (safari)
|
|
//
|
|
this.fld.focus();
|
|
if (this.fld.selectionStart)
|
|
this.fld.setSelectionRange(this.sInput.length, this.sInput.length);
|
|
|
|
|
|
this.clearSuggestions();
|
|
|
|
// pass selected object to callback function, if exists
|
|
//
|
|
if (typeof(this.oP.callback) == "function")
|
|
this.oP.callback( this.aSuggestions[this.iHighlighted-1] );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.killTimeout = function()
|
|
{
|
|
clearTimeout(this.toID);
|
|
}
|
|
|
|
_bsn.AutoSuggest.prototype.resetTimeout = function()
|
|
{
|
|
clearTimeout(this.toID);
|
|
var pointer = this;
|
|
this.toID = setTimeout(function () { pointer.clearSuggestions() }, 1000);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.AutoSuggest.prototype.clearSuggestions = function ()
|
|
{
|
|
|
|
this.killTimeout();
|
|
|
|
var ele = _bsn.DOM.getElement(this.idAs);
|
|
var pointer = this;
|
|
if (ele)
|
|
{
|
|
var fade = new _bsn.Fader(ele,1,0,250,function () { _bsn.DOM.removeElement(pointer.idAs) });
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// AJAX PROTOTYPE _____________________________________________
|
|
|
|
|
|
if (typeof(_bsn.Ajax) == "undefined")
|
|
_bsn.Ajax = {}
|
|
|
|
|
|
|
|
_bsn.Ajax = function ()
|
|
{
|
|
this.req = {};
|
|
this.isIE = false;
|
|
}
|
|
|
|
|
|
|
|
_bsn.Ajax.prototype.makeRequest = function (url, meth, onComp, onErr)
|
|
{
|
|
|
|
if (meth != "POST")
|
|
meth = "GET";
|
|
|
|
this.onComplete = onComp;
|
|
this.onError = onErr;
|
|
|
|
var pointer = this;
|
|
|
|
// branch for native XMLHttpRequest object
|
|
if (window.XMLHttpRequest)
|
|
{
|
|
this.req = new XMLHttpRequest();
|
|
this.req.onreadystatechange = function () { pointer.processReqChange() };
|
|
this.req.open("GET", url, true); //
|
|
this.req.send(null);
|
|
// branch for IE/Windows ActiveX version
|
|
}
|
|
else if (window.ActiveXObject)
|
|
{
|
|
this.req = new ActiveXObject("Microsoft.XMLHTTP");
|
|
if (this.req)
|
|
{
|
|
this.req.onreadystatechange = function () { pointer.processReqChange() };
|
|
this.req.open(meth, url, true);
|
|
this.req.send();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
_bsn.Ajax.prototype.processReqChange = function()
|
|
{
|
|
|
|
// only if req shows "loaded"
|
|
if (this.req.readyState == 4) {
|
|
// only if "OK"
|
|
if (this.req.status == 200)
|
|
{
|
|
this.onComplete( this.req );
|
|
} else {
|
|
this.onError( this.req.status );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// DOM PROTOTYPE _____________________________________________
|
|
|
|
|
|
if (typeof(_bsn.DOM) == "undefined")
|
|
_bsn.DOM = {}
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.createElement = function ( type, attr, cont, html )
|
|
{
|
|
var ne = document.createElement( type );
|
|
if (!ne)
|
|
return false;
|
|
|
|
for (var a in attr)
|
|
ne[a] = attr[a];
|
|
|
|
if (typeof(cont) == "string" && !html)
|
|
ne.appendChild( document.createTextNode(cont) );
|
|
else if (typeof(cont) == "string" && html)
|
|
ne.innerHTML = cont;
|
|
else if (typeof(cont) == "object")
|
|
ne.appendChild( cont );
|
|
|
|
return ne;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.clearElement = function ( id )
|
|
{
|
|
var ele = this.getElement( id );
|
|
|
|
if (!ele)
|
|
return false;
|
|
|
|
while (ele.childNodes.length)
|
|
ele.removeChild( ele.childNodes[0] );
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.removeElement = function ( ele )
|
|
{
|
|
var e = this.getElement(ele);
|
|
|
|
if (!e)
|
|
return false;
|
|
else if (e.parentNode.removeChild(e))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.replaceContent = function ( id, cont, html )
|
|
{
|
|
var ele = this.getElement( id );
|
|
|
|
if (!ele)
|
|
return false;
|
|
|
|
this.clearElement( ele );
|
|
|
|
if (typeof(cont) == "string" && !html)
|
|
ele.appendChild( document.createTextNode(cont) );
|
|
else if (typeof(cont) == "string" && html)
|
|
ele.innerHTML = cont;
|
|
else if (typeof(cont) == "object")
|
|
ele.appendChild( cont );
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.getElement = function ( ele )
|
|
{
|
|
if (typeof(ele) == "undefined")
|
|
{
|
|
return false;
|
|
}
|
|
else if (typeof(ele) == "string")
|
|
{
|
|
var re = document.getElementById( ele );
|
|
if (!re)
|
|
return false;
|
|
else if (typeof(re.appendChild) != "undefined" ) {
|
|
return re;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
else if (typeof(ele.appendChild) != "undefined")
|
|
return ele;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.appendChildren = function ( id, arr )
|
|
{
|
|
var ele = this.getElement( id );
|
|
|
|
if (!ele)
|
|
return false;
|
|
|
|
|
|
if (typeof(arr) != "object")
|
|
return false;
|
|
|
|
for (var i=0;i<arr.length;i++)
|
|
{
|
|
var cont = arr[i];
|
|
if (typeof(cont) == "string")
|
|
ele.appendChild( document.createTextNode(cont) );
|
|
else if (typeof(cont) == "object")
|
|
ele.appendChild( cont );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.DOM.getPos = function ( ele )
|
|
{
|
|
var ele = this.getElement(ele);
|
|
|
|
var obj = ele;
|
|
|
|
var curleft = 0;
|
|
if (obj.offsetParent)
|
|
{
|
|
while (obj.offsetParent)
|
|
{
|
|
curleft += obj.offsetLeft
|
|
obj = obj.offsetParent;
|
|
}
|
|
}
|
|
else if (obj.x)
|
|
curleft += obj.x;
|
|
|
|
|
|
var obj = ele;
|
|
|
|
var curtop = 0;
|
|
if (obj.offsetParent)
|
|
{
|
|
while (obj.offsetParent)
|
|
{
|
|
curtop += obj.offsetTop
|
|
obj = obj.offsetParent;
|
|
}
|
|
}
|
|
else if (obj.y)
|
|
curtop += obj.y;
|
|
|
|
return {x:curleft, y:curtop}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// FADER PROTOTYPE _____________________________________________
|
|
|
|
|
|
|
|
if (typeof(_bsn.Fader) == "undefined")
|
|
_bsn.Fader = {}
|
|
|
|
|
|
|
|
|
|
|
|
_bsn.Fader = function (ele, from, to, fadetime, callback)
|
|
{
|
|
if (!ele)
|
|
return false;
|
|
|
|
this.ele = ele;
|
|
|
|
this.from = from;
|
|
this.to = to;
|
|
|
|
this.callback = callback;
|
|
|
|
this.nDur = fadetime;
|
|
|
|
this.nInt = 50;
|
|
this.nTime = 0;
|
|
|
|
var p = this;
|
|
this.nID = setInterval(function() { p._fade() }, this.nInt);
|
|
}
|
|
|
|
|
|
|
|
|
|
_bsn.Fader.prototype._fade = function()
|
|
{
|
|
this.nTime += this.nInt;
|
|
|
|
var ieop = Math.round( this._tween(this.nTime, this.from, this.to, this.nDur) * 100 );
|
|
var op = ieop / 100;
|
|
|
|
if (this.ele.filters) // internet explorer
|
|
{
|
|
try
|
|
{
|
|
this.ele.filters.item("DXImageTransform.Microsoft.Alpha").opacity = ieop;
|
|
} catch (e) {
|
|
// If it is not set initially, the browser will throw an error. This will set it if it is not set yet.
|
|
this.ele.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+ieop+')';
|
|
}
|
|
}
|
|
else // other browsers
|
|
{
|
|
this.ele.style.opacity = op;
|
|
}
|
|
|
|
|
|
if (this.nTime == this.nDur)
|
|
{
|
|
clearInterval( this.nID );
|
|
if (this.callback != undefined)
|
|
this.callback();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
_bsn.Fader.prototype._tween = function(t,b,c,d)
|
|
{
|
|
return b + ( (c-b) * (t/d) );
|
|
} |