function externalLinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if (
			anchor.getAttribute("href") && ( 
			anchor.getAttribute("rel") == "external" || 
			anchor.getAttribute("rel") == "external nofollow" || 
			anchor.getAttribute("rel") == "nofollow external" )
			)
		anchor.target = "_blank";
	}
}

sfHover = function() {
	if($('mainmenu')){
		var mainmenu = $('mainmenu');
		var sfEls = mainmenu.getElementsByTagName("li");
		for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				this.className+="sfhover";
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp("sfhover\\b"), "");
			}
		}
	}
}

window.onload = function() {
	externalLinks();
	if(window.attachEvent){
		sfHover();
	}
}



//Random achtergrond module

function changeBack(page) {
	if (page =='0') {
		
		document.body.style.backgroundImage = 'url(img/bg1.jpg)';
	}
	
	else if (page =='1') {
	
		document.body.style.backgroundImage = 'url(img/bg2.jpg)';
	}
	
	else if (page =='2') {
		
		document.body.style.backgroundImage = 'url(img/bg3.jpg)';
	}
	
	else if (page =='3') {
	
		document.body.style.backgroundImage = 'url(img/bg4.jpg)';
	}
	
	else if (page =='4') {
	
		document.body.style.backgroundImage = 'url(img/bg5.jpg)';
	}
	
	else if (page =='5') {
	
		document.body.style.backgroundImage = 'url(img/bg6.jpg)';
	}	
}