function checkAll(trueorfalse)
{
  for (var i = 0; i < document.linkvalidatorform.elements.length; i++)
  {
	    document.linkvalidatorform.elements[i].checked = trueorfalse;
  }
}
function doValidate()
{
var atleastonechecked = 0;
  for (var i = 0; i < document.linkvalidatorform.elements.length; i++)
  {
  
	    if(document.linkvalidatorform.elements[i].checked)
		{
			var atleastonechecked = 1;
		}
  }
if (atleastonechecked!==0)
{
	document.linkvalidatorform.submit();
}
else
{
	window.alert("Please select at least one link to validate.");
}
}