var newwindow;
function popup(url)
{
	newwindow=window.open(url,'name','height=550,width=795,scrollbars=yes,location=yes,resizable=yes,toolbar=yes' );
	if (window.focus) {newwindow.focus()}
}


var newwindow;
var newwindow;
function popup2(url)
{
	newwindow=window.open(url,'name','height=600,width=900,scrollbars=yes,location=yes,resizable=yes,toolbar=yes' );
	if (window.focus) {newwindow.focus()}
}

var newwindow;
function popup3(url)
{
	newwindow=window.open(url,'name','height=475,width=630,scrollbars=yes,location=yes,resizable=yes' );
	if (window.focus) {newwindow.focus()}
}

   
   
   
   function toggle_visibility(show) {
       var e = document.getElementById(show);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }
	
	
	
	
	function change()
{
  if(document.getElementById("def").style.display="none")
    document.getElementById("def").style.display="block";
  else
    document.getElementById("def").style.display="none";
}