// JS

function Twiboo_ChangeContent(source_linkname) { //change url
	Twiboo_Hiderest(source_linkname);
	pageframe = document.getElementById(source_linkname);  
	menuclass = document.getElementById('menu_top_'+source_linkname);  
	pageframe.style.display = 'block';
	menuclass.className = 'menu_top_on';
}

function Twiboo_ShowHideDiv(layer_aan, layer_uit, class_aan, class_uit) { 
	if (document.all) { //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + layer_aan + ".style.display = 'block'"); 
		eval( "document.all." + layer_uit + ".style.display = 'none'"); 
		if (class_aan != '' && class_uit != '') { 
			eval( "document.all." + class_aan + ".className = 'Blue_link_on'"); 
			eval( "document.all." + class_uit + ".className = 'Blue_link'"); 
		}
	} 
	if (document.layers) { //IS NETSCAPE 4 or below 
		document.layers[layer_aan].display = 'block'; 
		document.layers[layer_uit].display = 'none'; 
	} 
	if (document.getElementById &&!document.all) { 
		hzaan = document.getElementById(layer_aan);  hzaan.style.display = 'block'; 
		hzuit = document.getElementById(layer_uit);  hzuit.style.display = 'none'; 
	} 
} 

function Align_Stuff() {
	//ALIGN ticketopmaat under the left_menu on the homepage
	leftmenu_id = document.getElementById('left_menu');
	leftmenu_height = leftmenu_id.offsetHeight;
	ticketopmaat_id = document.getElementById('nieuwbrief');
	ticketopmaat_id.style.marginTop = (leftmenu_height-15)+'px';	
}