function CheckAll(form,itemname)
{
  for (var i=0;i<form.elements.length;i++)
  {
    var e = form.elements[i];
    if (e.name == itemname)
       e.checked = form.chkall.checked;
  }
}

function CheckedItem(form,itemname,itemvalue)
{  
  var form=eval(form);
  for (var i=0;i<form.elements.length;i++)
  {
    var e = form.elements[i];
    if (e.name == itemname&&e.value==itemvalue)
       e.checked = true;
  }
  return false;
}

function OnlyCheckedItem(form,itemname,itemvalue)
{
	var form=eval(form);
	for (var i=0;i<form.elements.length;i++)
	{
		var e = form.elements[i];
		if (e.name == itemname)
		{
			if(e.value==itemvalue)
			{
				e.checked = true;				
			}else{
				e.checked = false;	
			}
		}
	}
	return false;	
}

function SelectedItem(form,itemname,itemvalue)
{	
	var formitem=eval(form+"."+itemname);	
	for(var si=0;si<formitem.length;si++)
	{
		if(formitem[si].value==itemvalue)
		{
			formitem[si].selected=true;
			break;
		}
	}
		
}