function OpenWindow(url)

   {

boodschap=open(url,"vensternaam","toolbar=no,directories=no,menubar=no,scrollbars=yes,status=no,scrolling=auto,resizable=yes,width=630,height=500,left=50%,top=50%") 

   }
   
function OpenWindow2(url)

   {

boodschap=open(url,"vensternaam","toolbar=no,directories=no,menubar=no,scrollbars=yes,status=no,scrolling=auto,resizable=yes,width=630,height=600,left=0,top=0")
   }

function OpenWindow3(url)

   {

boodschap=open(url,"vensternaam","toolbar=no,directories=no,menubar=no,scrollbars=yes,status=no,scrolling=auto,resizable=yes,width=400,height=300,left=80,top=150") 

   }


 // functie zorgt voor nieuw accessible venster
// zie map scripts_docs/new_window.doc
// in pagina script in head laden en link aanroepen als <a href="nieuwvenster.php" rel="gallery">niew venster</a>
	
	try {
		document.addEventListener('click', handleClick, false);
	} catch(e) {
		if(document.attachEvent) {
			document.attachEvent('onclick', handleClick);
		} else {
			document.onclick = handleClick;
		}
	}

	function handleClick(e) {
		var event = e || window.event;
		if(event.ctrlKey || event.shiftKey || event.altKey) return true;
		if(event.which && event.which != 1) return true;

		var target = event.target || event.srcElement;
		while(target && !/^a$/i.test(target.nodeName)) {
			target = target.parentNode;
		}

		if(!target || !target.getAttribute('rel')) return true;

	   var rel = target.getAttribute('rel');
	   var href = target.getAttribute('href');
	   switch(rel) {
    		case 'gallery':
    			 window.open(href, '', 'width=600,height=500,scrollbars,resizable=yes');
    			 break;
    		case 'foto':
    			 window.open(href, '', 'width=520,height=400,left=0,top=0');
    			 break;
    		case 'formulier':
    			 window.open(href, '', 'width=600,height=560,scrollbars,left=0,top=0');
    			 break;
    		case 'window1':
    			 window.open(href, '', 'width=720,height=560,scrollbars,left=0,top=0');
    			 break;
            case 'sportdag':
    			 window.open(href, '', 'width=900,height=800,scrollbars,left=0,top=0');
    			 break;
    		case 'external':
    			 window.open(href);
    			 break;
    		default:
			 return true;
	   }

	   try { event.preventDefault(); } catch(e){}
	   return false;
	}