$(document).ready(function()
{
	$("#chk_all").click(function()
	{
		if(this.checked)
		{
			$("[name='selectid']").attr("checked","true");//全选 
		}
		else
		{
			 $("[name='selectid']").removeAttr("checked");//取消全选
		}
	});
	

	jQuery.message=function(my_div,str)
	{
		var divObj=$("#"+my_div);
		divObj.html(str);
		divObj.slideToggle(600,"",function()
		{
			divObj.fadeOut(1500);
		});
	}
	
	jQuery.success=function(my_div,str)
	{
		var divObj=$("#"+my_div);
		divObj.html(str);
		divObj.slideToggle(600,"","");
	}
});