var expDays = 30;
var exp = new Date(); 
var ChildWin;
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

//set stylesheet
favColor = GetCookie('color');
if(favColor == null)
{
	favColor = 1;
	SetCookie('color', favColor, exp);
}
	
if(favColor == 1)
	document.write('<link rel="STYLESHEET" type="text/css" href="askstyle.css">')
if(favColor == 2)
	document.write('<link rel="STYLESHEET" type="text/css" href="ask_hc.css">')		
if(favColor == 3)
	document.write('<link rel="STYLESHEET" type="text/css" href="ask_ll.css">')

function set(n){
	favColor = n;
	SetCookie('color', favColor, exp);
	location.reload();		
}		

//menu
function changecss()
{
	url = "popup.htm";
	Left = window.screenX + window.innerWidth - 160;
	if(!Left)
		Left = window.screen.width - 160;	
	windowprops = "left=" + Left + ",top=50,width=110,height=185,resizable=1";
	if(ChildWin == null)
		ChildWin = window.open(url, "ChildWin", windowprops);
	else
		ChildWin.focus();	
}
function closeWin()
{
    if (ChildWin)
	{
		if(!ChildWin.closed)
    		ChildWin.close();	    
		ChildWin = null;	
    }
}
	
//cookie-functies	
function getCookieVal (offset) {  
	var endstr = document.cookie.indexOf (";", offset);  
	if (endstr == -1)    
	endstr = document.cookie.length;  
	return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
			return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}

function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) +  
	((domain == null) ? "" : ("; domain=" + domain)) +    
	((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
 
function WriteBtn(){
	/* Writes the button for styles to document - only visible for javascript-
		enabled browsers */
	document.write('<A HREF="#" CLASS="btn" ONCLICK="changecss(); return false;" ONMOUSEOVER="WriteStatus(1);return true;" ONMOUSEOUT="WriteStatus(0);return false;">Andere kleuren</A>');
}	

function WriteStatus(displaytext){
	if(displaytext)
		window.status = "Verandert het kleurenschema voor alle pagina's";	
	else
		window.status="";	
}

//Gedeeltelijk afkomstig van http://javascript.internet.com