//platform and browser check
var ISieWIN = false;
var platform = navigator.appVersion;
var browser = navigator.appName;

if ((platform.indexOf("Win") >= 0) || (platform.indexOf("NT") >= 0))
{
	if(browser == "Microsoft Internet Explorer")
	{
		
		//for layer opacity
		ISieWIN = true;

		//for pngs
		//document.writeln('<style type="text\/css">img { visibility:hidden; } <\/style>');
		//window.attachEvent("onload", fnLoadPngs);
		
	}	
}

//backround style picker (one for ieWin, one for everyone else)
function switchBack()
{
	if(ISieWIN)
	{
		document.write("<div style='width:8.0em;height:376px;background-color:#F0EDE2;filter: alpha(opacity=85); filter: progid:DXImageTransform.Microsoft.Alpha(opacity=85);'>");
	}
	else
	{
		document.write("<div style='width:11.25em;height:376px;background-image: url(images/backTan80.png);'>");
	}
}


function switchAbout()
{
	if(ISieWIN)
	{
		document.write("<div style='width:9.5em;height:376px;background-color:#F0EDE2;filter: alpha(opacity=85); filter: progid:DXImageTransform.Microsoft.Alpha(opacity=85);'>");
	}
	else
	{
		document.write("<div style='width:12.50em;height:376px;background-image: url(images/backTan80.png);'>");
	}
}












function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		
	sqEvent_over = newImage("images/int_sqEvent-over.gif");
	sqDesign_over = newImage("images/int_sqDesign-over.gif");
	sqPublic_over = newImage("images/int_sqPublic-over.gif");
	sqStrategy_over = newImage("images/int_sqStrategy-over.gif");
	sqElectronic_over = newImage("images/int_sqElectronic-over.gif");

		preloadFlag = true;
	}
}