/**
 * 检验文章窗体
 */
function chkform(frm)
{
	var e;
	var eName;

	for (var i=0;i<=frm.elements.length-1;i++)
	{
		e = frm.elements[i];
		if ((e.type == "text") || (e.type == "textarea") || (e.type == "password"))
		{
			e.value = Trim(e.value);

			if (e.allownull == 0)
			{
				if (e.value.length == "")
				{
					eName = e.name;

					try
					{
						e.className="alert";
						e.focus();
					}
					catch (e)
					{
						alert ("对象:" + eName + "属性不允许为空，请检查后提交。")
					}

					return false;
					break;
				}else{
					try
					{
						e.className="normal";
					}catch(e){;};
				}
			}
		}
	}
	
	return true;
}

function Trim(params)
{
	return (params.replace(/^\s+|\s+$/g,""));
}