function displayvac(obj){
	var temp = obj.id;
	var temp2 = temp.split("-");
	var vac = temp2[1];
	document.getElementById('detail-'+vac).style.display="block";
	obj.className = "activevacitem";

	var objA = document.getElementById("vaclist").getElementsByTagName('a');
	for (var aCounter=0; aCounter<objA.length; aCounter++){
		if(objA[aCounter].id != temp){
			var myitem = objA[aCounter].id;
			var mynum = myitem.split("-");
			document.getElementById('detail-'+mynum[1]).style.display="none";
			document.getElementById('vac-'+mynum[1]).className = "vacitem";
		}
	}
}

if (document.getElementsByTagName){ //skip old browsers
	var objA = document.getElementById("vaclist").getElementsByTagName('a'); //get all elements 'a' in the ul with id 'vaclist'
	for (var aCounter=0; aCounter<objA.length; aCounter++){
		if(objA[aCounter].className.indexOf('vacitem')!=-1){
			objA[aCounter].onmouseover = function(){return displayvac(this)};
		}
	}
}

var ranNum= 1+Math.round(Math.random()*4);
displayvac(document.getElementById('vac-'+ranNum));