var ua = navigator.userAgent;
var opera = /opera [56789]|opera\/[56789]/i.test(ua);
var ie = !opera && /MSIE/.test(ua);
var ie50 = ie && /MSIE 5\.[01234]/.test(ua);
var ie6 = ie && /MSIE [6789]/.test(ua);
var ieBox = ie && (document.compatMode == null || document.compatMode != "CSS1Compat");
var moz = !opera && /gecko/i.test(ua);
var nn6 = !opera && /netscape.*6\./i.test(ua);

function NewAdminWindow(mypage,myname,w,h,scroll,pos){
	newwidth=(w.length)?w:(screen.width * 0.7);
	newheight=(h.length)?h:(screen.height * 0.7);
	newwidth=(newwidth < 800)?(screen.width-60):newwidth;
	newheight=(newheight < 600)?(screen.height-60):newheight;
	if(pos=="random"){
		LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-newwidth)):100;
		TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-newheight)-75)):100;}
	if(pos=="center"){
		LeftPosition=(screen.width)?(screen.width-newwidth)/2:100;
		TopPosition=(screen.height)?(screen.height-newheight)/2-20:100;
	}else if((pos!="center" && pos!="random") || pos==null){
		LeftPosition=0;TopPosition=10
	}
	settings='width='+newwidth+',height='+newheight+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
	win=window.open(mypage,myname,settings);
	if(win.focus)
	{
		win.focus();
	} 	
}

function constExpression(x) {
	return x;
}

function simplifyCSSExpression() {
	try {
		var ss,sl, rs, rl;
		ss = document.styleSheets;
		sl = ss.length
	
		for (var i = 0; i < sl; i++) {
			simplifyCSSBlock(ss[i]);
		}
	}
	catch (exc) {
		alert("Got an error while processing css. The page should still work but might be a bit slower");
		throw exc;
	}
}

function simplifyCSSBlock(ss) {
	var rs, rl;
	
	for (var i = 0; i < ss.imports.length; i++)
		simplifyCSSBlock(ss.imports[i]);
	
	if (ss.cssText.indexOf("expression(constExpression(") == -1)
		return;

	rs = ss.rules;
	rl = rs.length;
	for (var j = 0; j < rl; j++)
		simplifyCSSRule(rs[j]);
	
}

function simplifyCSSRule(r) {
	var str = r.style.cssText;
	var str2 = str;
	var lastStr;
	do {
		lastStr = str2;
		str2 = simplifyCSSRuleHelper(lastStr);
	} while (str2 != lastStr)

	if (str2 != str)
		r.style.cssText = str2;
}

function simplifyCSSRuleHelper(str) {
	var i, i2;
	i = str.indexOf("expression(constExpression(");
	if (i == -1) return str;
	i2 = str.indexOf("))", i);
	var hd = str.substring(0, i);
	var tl = str.substring(i2 + 2);
	var exp = str.substring(i + 27, i2);
	var val = eval(exp)
	return hd + val + tl;
}

if (/msie/i.test(navigator.userAgent) && window.attachEvent != null) {
	window.attachEvent("onload", function () {
		simplifyCSSExpression();
	});
}