var divClicked = "";
        
        function rollover(strDiv)
        {
            ClearAllSubMenu();            
            if(strDiv!=divClicked)
            {
                if(divClicked!="")
                {
                    document.getElementById(divClicked).style.display="none";
                }                
            }
            if(strDiv!="")
            {
                document.getElementById(strDiv).style.display="";
                document.getElementById(strDiv).style.backgroundColor="#fff";
                document.getElementById("menuMain").style.height="52px";
            }
            else
            {
                document.getElementById("menuMain").style.height="26px";
            }
        }
        
         
        function rollclick()
        {
            hasNotDivClicked = false;
        }
        
        function ClearAllSubMenu()
        {
            document.getElementById("navKBS").style.display="none";
            document.getElementById("navMDS").style.display="none";
            document.getElementById("navVV").style.display="none";
            document.getElementById("navWhos").style.display="none";
            
            if(divClicked=="")
            {
                document.getElementById("menuMain").style.height="26px";
            }
            else
            {
                document.getElementById("menuMain").style.height="52px";
                document.getElementById(divClicked).style.display="";
            }
            
        }