function addLoadEvent(func){
	var oldonload = window.onload;
	
	if (typeof window.onload != 'function'){
		window.onload = func; 
	} 
	else {
		window.onload = function(){ oldonload(); func(); } } 
	}
/* functies om externe links in nieuw venster te tonen */ 

function LinkInNewWindow() { 
	var strDomeinNaam; strDomeinNaam = ExtractDomainName(document.URL); 
	
	if (!document.getElementsByTagName) return; 
		var anchors = document.getElementsByTagName("a"); 
			
			for (var i=anchors.length-1; i>=0; i--) 
				{ var anchor = anchors[i]; var strUrl; strUrl = ExtractDomainName(anchor.href); 
					
					if (strUrl != strDomeinNaam) { 
						
						if ((strUrl != "javascript") && (strUrl != "mailto")) { 
							anchor.target = "_blank"; 
						}
					} 
				}
} 
				function ExtractDomainName(s) {
					var i = s.indexOf('//'); 
						if(i >= 0) {
							s = s.substr(i+2); 
						}
						i = s.indexOf('/');
						if(i >= 0) {
							s = s.substr(0,i); 
						} i = s.indexOf(':'); 
						if(i >= 0) {
							s = s.substr(0,i); 
						} var re = /[a-z]/i;
						if(! re.test(s)) { 
							return s; 
						}
						
						var a = s.split('.'); 
						if(a.length < 2) {
							return s; 
						}
						var domain = a[a.length-2] + '.' + a[a.length-1]; 
						
						if(a.length > 2) {
							if(a[a.length-2].length==2 && a[a.length-1].length==2) { 
								domain = a[a.length-3] + '.' + domain; } 
						} 
						
						return domain.toLowerCase(); 
				}