var cnt=1;

function displayWindow(url, width, height) {
	   
	  var Win = window.open(url,cnt,'width=' + width + ',height=' + height + ',resizable=1,scrollbars=yes,menubar=no' );
      
cnt=cnt+1;
}

function dropdown(obj) {

   if (document.getElementById(obj).style.display=='none' || document.getElementById(obj).style.display=='') {
     document.getElementById(obj).style.display='block';
   }
   else {
     document.getElementById(obj).style.display='none';
   }
}