/**

 * @since 2006/08/01

 * @version 1.0

 */

function UaRollover(){

}

UaRollover.prototype = {

	initialize:function(clses){

		var len = clses.length;

		this.storedImg = new Array();

		var elems = new Array();

	

		for(var k=0; k<len; k++){

			elems = elems.concat(this.getElementsByClassName("img", clses[k]));

			elems = elems.concat(this.getElementsByClassName("input", clses[k]));

		}



		len = elems.length;

		for(var i=0; i<len; i++){



			var elem = elems[i];

			var imgSrc = elem.src;



			if(imgSrc.indexOf("_cur.")>-1){

				continue;

			}

			var ovrStr = this.imgOvrReplace(imgSrc, true)

			this.storedImg[imgSrc] = new Image();

			this.storedImg[imgSrc].src = ovrStr;



			elem.ins = this;

			elem.onmouseover = this.mouseOverEvent;

			elem.onmouseout = this.mouseOutEvent;



		}

	},

	getElementsByClassName:function(pTagName, pClassName){

		var res = new Array();

		var tags = document.getElementsByTagName(pTagName);

		var len = tags.length;

		for(var i=0; i<len; i++){

			var classes = tags[i].className;

			if(classes.indexOf(pClassName)>-1){

				res[res.length] = tags[i];

			}

		}

		return res;

	},

	mouseOverEvent:function (){

		this.src = this.ins.imgOvrReplace(this.src, true);

	},

	mouseOutEvent:function(){

		this.src = this.ins.imgOvrReplace(this.src, false);

	},

	imgOvrReplace:function(pSrc, pIsOvr){

		var srcStr = pSrc;

		if(pIsOvr){

			if(srcStr.indexOf("_ovr")>-1){

				return srcStr;

			}

			srcStr = this.strReplace(srcStr, ".gif", "_ovr.gif");

			srcStr = this.strReplace(srcStr, ".jpg", "_ovr.jpg");

			srcStr = this.strReplace(srcStr, ".png", "_ovr.png");

		}else{

			srcStr = this.strReplace(srcStr, "_ovr.gif", ".gif");

			srcStr = this.strReplace(srcStr, "_ovr.jpg", ".jpg");

			srcStr = this.strReplace(srcStr, "_ovr.png", ".png");

		}

		return srcStr;

	},

	strReplace:function (pStr, pKey, pAlt){

		return pStr.split(pKey).join(pAlt);

	}

}





/**********************************************************

* 

*/

var uaRollover = new UaRollover();





function uaRO(){

	uaRollover.initialize(arguments);

}





/**********************************************************

*/

function initialize(){

	uaRO('rollover');

}