var suffix = '.aspx';
function Send()
{
  //alert(document.getElementById('Search1_ClassList1_drpList'));
  if(document.getElementById('Search1_vsClassDrp_drpList')!=null)
  {
     var id = document.getElementById('Search1_vsClassDrp_drpList').options[document.getElementById('Search1_vsClassDrp_drpList').options.selectedIndex].value;
     //alert(id);
     if(id == "")
     {
        location.href = 'Send.aspx';
     }
     else
     {
     location.href = 'Send-----'+id+suffix;
     }
  }
}