function addEvent(obj, evt, func){
	if(obj.addEventListener){
		obj.addEventListener(evt,func,false);
	}
	else if(obj.attachEvent){
		obj.attachEvent("on"+evt,func);
	}
	else {
		obj["on"+ evt] = func;
	}
}

function fixPNG(){
	var arVersion = navigator.appVersion.split("MSIE")
	var version = parseFloat(arVersion[1])
	
	if (navigator.appVersion.indexOf("MSIE")!= -1 && (version >= 5.5 && version < 8) && (document.body.filters)) 
	{
	   for(var i=0; i<document.images.length; i++)
	   {
	      var img = document.images[i]
	      var imgName = img.src.toUpperCase()
	      if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
	      {
	         var imgID = (img.id) ? "id='" + img.id + "' " : ""
	         var imgClass = (img.className) ? "class='" + img.className + "' " : ""
	         var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
	         var imgStyle = "display:inline-block;" + img.style.cssText 
	         if (img.align == "left") imgStyle = "float:left;" + imgStyle
	         if (img.align == "right") imgStyle = "float:right;" + imgStyle
	         if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
	         var strNewHTML = "<span " + imgID + imgClass + imgTitle
	         + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
	         + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
	         + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
	         img.outerHTML = strNewHTML
	         i = i-1
	      }
	   }
	}
}

function imgOver(imgId){
	document.getElementById(imgId).src = './images/'+imgId+'_over.gif';
}

function imgOut(imgId){
	document.getElementById(imgId).src = './images/'+imgId+'_out.gif';
}

function preloadImage(img){
	document.getElementById(img).src = "./images/"+ img +"_over.gif";
	document.getElementById(img).src = "./images/"+ img +"_out.gif";
	document.getElementById(img).src = "./images/"+ img +".gif";
}

function attachBehaviour(){
	linkArray = new Array('portfolio_link', 'home_link', 'contact_link');
	for(i=0;i<linkArray.length;i++)
	{
		preloadImage(linkArray[i]);
		document.getElementById(linkArray[i]).onmouseover = function(){imgOver(this.id)};
		document.getElementById(linkArray[i]).onmouseout = function(){imgOut(this.id)};
	}
}

function verticalPlacement()
{
    document.getElementById('bglayer').style.top = (screen.availHeight - 100 - document.getElementById('bglayer').offsetHeight)/2 +"px";
}

function do_sIFR(){
// Replacement calls

if(typeof sIFR == "function"){
	//sSelector, sFlashSrc, sColor, sLinkColor, sBgColor, sHoverColor, nPaddingTop, nPaddingBottom, sFlashVars
	sIFR.replaceElement("h3", "cooperblack.swf", "#918e7f", null, null, "#f6f3e4", 0, 0, 0, 0, "textAlign=center");
};
}

function init(){
	fixPNG();
	attachBehaviour();
	do_sIFR();
	if (window.initScroll) 
		initScroll();
	//verticalPlacement();
}

addEvent(window, "load", init);