var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);


function wechsleFarbe(was, wie)
{
	was1= "td_" + was
   if (wie == 'hell') 
   {
     color = '#e50000';
   } else {
     color = '#a50000';
   }

	if(isIE4) 
	{
		eval("document.all."+was+".style.backgroundColor='"+color+"'");
	}
	if(isNS4){}
	if(isDOM)
	{
		eval("document.getElementById('"+was+"').style.backgroundColor='"+color+"'");
	}
}