function getselectvalue(formobj,checkboxname)
    {
        var ids = "";
        for(var i=0;i<formobj.elements.length;i++)
        {
            if(formobj.elements[i].name.indexOf(checkboxname)==0&&formobj.elements[i].checked==true)
            {
                ids += formobj.elements[i].value+",";
            }
        }
        if(ids=="")
        {
            alert("请先选择！");
        }
        return ids;
    }
    function selectall(formobj,checkboxname,selectbutton)
    {
        for(var i=0;i<formobj.elements.length;i++)
        {
			if(formobj.elements[i].name.indexOf(checkboxname)==0)
			{
				if(selectbutton.checked)
				{
				formobj.elements[i].checked = true;
			}
			else
				{
					formobj.elements[i].checked = false;
					}
            }
        }
	}
	
	function reselect(formobj,checkboxname)
    {
        for(var i=0;i<formobj.elements.length;i++)
        {
			if(formobj.elements[i].name.indexOf(checkboxname)==0)
			{
				if(formobj.elements[i].checked==true)
				{
					formobj.elements[i].checked = false;
				}
				else
				{
					formobj.elements[i].checked = true;
				}
            }
        }
	}
	function gotourl(gourl)
	{
	    if(confirm('你真的要删除吗？'))
	    {
		    location.href = gourl;
		}
	}