//Klappt das Flipelement aus
function flip(elementid,index){
  var menuediv = document.getElementById(elementid);
  var menuebottomdiv = document.getElementById(elementid+"_bottom");
  var height = parseInt(menuediv.style.height);
   if(heights[index][1])
   {     
     menuebottomdiv.style.background = "url('img/flipmenue/flip_06.png')";
     menuebottomdiv.style.height = "22px";
     if(height < heights[index][0])
     {
       if(height < heights[index][0]/2) ammount +=5;
       else {if (ammount >5) ammount -=5;}
       menuediv.style.height = (height+ammount)+"px";
           setTimeout("flip('"+elementid+"',"+index+")",50);
     }
     else {heights[index][1] = false;}
   }
   else
   {
     if(height > 0)
     {
       if(height > heights[index][0]/2) ammount +=5;
       else if(ammount >5) ammount -=5;
       if (height-ammount <0) height = ammount;
       menuediv.style.height = (height-ammount)+"px";
       setTimeout("flip('"+elementid+"',"+index+")",50);
     }
     else 
     {
       menuebottomdiv.style.background = "";
       menuebottomdiv.style.height = "0px";
       heights[index][1] = true;
     }
   }
 }