function SelectAll(form, checkbox)
{
	var nLength = form.elements.length;
	if(typeof(nLength) !=" undefined")
	{
		for(var i=0; i<nLength; i++)
		{
		    var arr_names = form.elements[i].name.split('$');
			if(form.elements[i].type == "checkbox" && arr_names[arr_names.length > 0 ? arr_names.length - 1 : 0] == checkbox.value)
				form.elements[i].checked = checkbox.checked;
		}
	}
}