function roll(num){
	if (num==98) document.butt98.src="butt/koop_hi.gif";
	if (num==99) document.butt99.src="butt/impress_hi.gif";
}

function rollout(num){
	if (num==98) document.butt98.src="butt/koop.gif";
	if (num==99) document.butt99.src="butt/impress.gif";
}

function Submenu(num){
	if (num==98) {
		self.location.href="koop.html";
		}
	if (num==99) {
		self.location.href="impress.html";
		}
	}
	
function tohome(){
		top.location.href="http://www.hpgh.de";
}


<!-- Anfang Quick Suche
function Go(x)
{
 if(x == "nothing")
 {
   document.forms[0].reset();
   document.forms[0].elements[0].blur();
   self.focus();
   return;
 }
 else
  {
   document.forms[0].reset();
   document.forms[0].elements[0].blur();
   self.focus();
   self.location.href = x; 
  }
}
// Ende Quick Suche-->