activateMenu = function(nav) {
	
	
    /* currentStyle restricts the Javascript to IE only */
	if (document.all && document.getElementById(nav).currentStyle) {  
       var navroot = document.getElementById(nav);
        
		/* Get all the list items within the menu */
		var lis=navroot.getElementsByTagName("LI");  
        for (i=0; i<lis.length; i++) {
        
           /* If the LI has another menu level */
            if(lis[i].lastChild.tagName=="UL"){
					
				
                /* assign the function to the LI */
             	lis[i].onmouseover=function() {	
                
                   /* display the inner menu */
                   this.lastChild.style.display="block";
                }				
                lis[i].onmouseout=function() {                       
                   this.lastChild.style.display="none";
                }
            }
        }
     }
  }
  
  window.onload= function(){
      /* pass the function the id of the top level UL */
  
      /* remove one, when only using one menu */
      activateMenu('nav'); 
      
      resize();
  }
  
  window.onresize = resize;
  
  function resize()
  {	
  	
  	if (document.body.clientHeight > 830)
  	{
  		var tdLeft = document.getElementById("tdLeft_Allgemein");
  		tdLeft.style.height = document.body.clientHeight - (330+40);
  	}
}