// JavaScript Document

var bildArray=new Array(30,31,32,33);
	function bild(nummer){
		if(document.getElementById)
		for (a=0;a<bildArray.length;a++){
		if(bildArray[a]!=nummer){
			document.getElementById("bild"+bildArray[a]).style.display = "none";
			}else{
			document.getElementById("bild"+nummer).style.display = "block";
		}
	}
}

function crossfirst() {
		document.getElementById("crossselling").style.backgroundPosition = "0 -243px";
		document.getElementById("crossfirst").style.display = "none";
		document.getElementById("cross_sec").style.display = "block";
	}		
	
function crosssec() {
		document.getElementById("crossselling").style.backgroundPosition = "0 0px";
		document.getElementById("cross_sec").style.display = "none";
		document.getElementById("crossfirst").style.display = "block";
	}