function onYes() 
{
  //var btn =document.getElementById('ctl00_Content_btnDelete');
   __doPostBack('ctl00$Content$btnDelete', '');
}
function onPublish() 
{
   __doPostBack('ctl00$Content$btnPublish', '');
}
function onUpdate() 
{
   __doPostBack('ctl00$Content$lbUpdate', '');
}

//function onDelete() 
//{
//   __doPostBack('ctl00$Content$btnDeleteImages', '');
//}