function popup(src,width,height)
{
    if (!width) width=600;
    if (!height) height=620;
	window.open(src, 'popup', 'height='+height+',width='+width+',resizable=1,scrollbars=1,status=0,toolbar=0,top=100,left=100', true);
	return false;
}

function togglevisible(divname) {
 if (document.getElementById(divname).style.display=='none') {
  document.getElementById(divname).style.display='block';
 } else {
  document.getElementById(divname).style.display='none';
 }
}