function getCookie(naam){
	
	var zoek = naam + "=";
	
	if (document.cookie.length>0){
		var begin = document.cookie.indexOf(zoek);
		if (begin!=-1){
			begin += zoek.length;
			var einde = document.cookie.indexOf(";", begin);
			if (einde==-1){
			einde = document.cookie.length;
			}
		return document.cookie.substring(begin, einde);
		}
	}
}

function hover(element, elementclass, elementid){
	
	if(getCookie('menu') != elementid){
		element.className = elementclass;
	}
}

function activate_sub_menu(cookieid){
	
	// Alle sub menu's worden verborgen
	var row = 0;
	var element = document.getElementById('sub_menu').getElementsByTagName('div');
	while(row < element.length){
		
		element[row].className = 'hidden';
		row++;
	}
	
	// Sub menu waarvoor aangeklikt is wordt weergeven
	document.getElementById('submenu' + cookieid + '').className = 'view';
	
	// Alle hoofdmenu's geen shaduuw geven
	var row = 0;
	var element = document.getElementById('buttons').getElementsByTagName('li');
	while(row < element.length){
		
		element[row].className = 'buttons_out';
		row++;
	}
	
	// Huidig element nieuwe waarde
	document.getElementById('menu' + cookieid +'').className = 'buttons_onclick';
	document.cookie = "menu="+ cookieid +"";
	
	//location.reload(true);
}

function renew(id){
	
	if(lastid != id){
			
		$(function(){
		  //Get our elements for faster access and set overlay width
		  var div = $('#submenu' + id + '');
		  var ul = $('ul.sc_menu' + id + '');
					   // unordered list's left margin
		  var ulPadding = 15;
		
		  //Get menu width
		  var divWidth = div.width();
		
		  //Find last image container
		  var lastLi = ul.find('li:last-child');
		
		  //When user move mouse over menu
		  div.mousemove(function(e){
		
			//As images are loaded ul width increases,
			//so we recalculate it each time
			var ulWidth = lastLi[0].offsetLeft + lastLi.outerWidth() + ulPadding;
		
			var left = (e.pageX - div.offset().left) * (ulWidth-divWidth) / divWidth;
			div.scrollLeft(left);
		  });
		});
		
		var lastid = id;
	}
}