function extInit() {

	var themablokken = document.getElementById('themablokken').getElementsByTagName('div');
	
	for (i = 0; i < themablokken.length; i++) {
		
		var links = themablokken[i].getElementsByTagName('A');
		
		if (links.length > 0) {
			
			if (themablokken[i].addEventListener) {
				themablokken[i].addEventListener("click", themablok_on_click , false);
			} else {
				themablokken[i].onclick = themablok_on_click;
			}

			themablokken[i].href = links[0].href;
			
			if (links[0].target) {
				themablokken[i].target = links[0].target;
			}
			
			themablokken[i].innerHTML = links[0].innerHTML;
			
		} else {
			themablokken[i].style.cursor = 'default';
		}
	}
	
	var aanbiedingen = document.getElementById('homepage_aanbiedingen').getElementsByTagName('div');
	
	for (i = 0; i < aanbiedingen; i++) {
		
		var links = aanbiedingen[i].getElementsByTagName('A');

		if (links.length > 0) {
			
			if (aanbiedigen[i].addEventListener) {
				aanbiedingen[i].addEventListener("click", themablok_on_click, false);
			} else {
				aanbiedingen[i].onclick = themablock_on_click;
			}
			
		} else {
			aanbiedingen[i].style.cursor = 'default';
		}
	}
	
	var overlay = document.getElementById('overlay');
	var overlay_content = document.getElementById('overlay_content');
	
	if (overlay && overlay_content) {
		show_overlay(document.getElementById('overlay'), document.getElementById('overlay_content'));
	}	
}

function themablok_on_click() {

	if (this.href) {
		
		if (this.target) {

			window.open(this.href, this.target);
			
		} else {
			
			document.location=this.href;
			
		}
	}

}