function topPfeil () {
	
	for(var i = 1; i < 6; i++)		
			
			//alert(document.getElementById('kanal_div_'+[i]).offsetHeight);
			
			if(document.getElementById('kanal_div_'+[i]).offsetHeight > 12){
				document.getElementById('kanal_pfeil_'+[i]).style.paddingTop = "2px";
			}else{
				document.getElementById('kanal_pfeil_'+[i]).style.marginTop = "-1px";

			}
	}