// JavaScript Document
var dom = document.getElementById;
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1;
var ns6=document.getElementById&&!document.all;
var ns4=document.layers;
var VISIBLE = "visible";
var HIDE = (ie4||ns6)? "hidden" : "hide";
var selectContainer = document.getElementsByTagName("SELECT");		


function changeImg(imgname,largeImg){
	document.getElementById("mainimg").src = imgname.src;
	document.getElementById("itemimage").src = largeImg.src;
		//	document.getElementById("mainimg").width = 200;
		//	document.getElementById("mainimg").height =200;

}

function showLayer(obj){
	for(i=0; i<selectContainer.length; i++)
		selectContainer[i].style.visibility = HIDE;
	if(dom || ie4 || ns6)
			obj.style.visibility = VISIBLE;
			obj.style.display = "";
			document.getElementById("mask").style.filter="alpha(opacity=50)";
			document.getElementById("mask").style.background="#000000";
			var screenwidth=document.body.clientWidth;
			var screenheight=document.body.scrollHeight;
			document.getElementById("mask").style.width=screenwidth;
			document.getElementById("mask").style.height=screenheight;
}

function hideLayer1(obj){
	for(i=0; i<selectContainer.length; i++)
		selectContainer[i].style.visibility = VISIBLE;
	if(dom || ie4 || ns6)
        obj.style.visibility = HIDE;
		obj.style.display = "none";
		document.getElementById("mask").style.filter="alpha(opacity=100)";
		document.getElementById("mask").style.background="transparent ";
		document.getElementById("mask").style.width="0";
}
//transperent png
var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}