var dom, nn4, ie;
dom = (document.getElementById)? true : false;
nn4 = (document.layers)? true : false;
ie = (document.all && !dom)? true : false;

function toggleDiv(objId) {
       if (dom){
       	  
          var obj = eval('document.all.'+objId);	 
 	
          if (obj.style.display == 'block') {
              obj.style.display='none';
          } else {
             obj.style.display='block';
          }
       }   
        
}