function R(a)
	{a.blur();}
	
// ebenenwechsel vorstand
var i;
var divs = document.getElementsByTagName("div");
function W(sicht) { 
	for(i=0;i<divs.length;i++)
	{
	if(divs[i].id=='content' || divs[i].id=='navi' || divs[i].id=='impr' || divs[i].id=='streif')
		{
    	continue;
   		}
	if(divs[i].id==sicht)
      divs[i].style.visibility="visible",1;
	else
      divs[i].style.visibility="hidden",1;	
	}
}