img_pre=new Array()
for (i=0; i<4; i++){
img_pre[i]=new Image()
img_pre[i].src="images/menu"+i+"s.gif"
}

function SetImg(Name,Img)
{
  document.images[Name].src='images/'+Img+".gif";
}

function imp()
{
imp1=window.open('impressum.html',"imp","top=30,left=30,width=450,height=400,scrollbars=1,resizable=1")
imp1.focus()
}