function writeCurDate()
{
	var today=new Date(); 
	var d=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六"); 
	document.write(today.getYear(),"年",today.getMonth()+1,"月",today.getDate(),"日", " ", d[today.getDay()]);
}

/* 检验某些字段是否为空 */
function CheckNull(objIDs, strErrs)
{
	var arrIds = objIDs.split(",");
	var arrErrs = strErrs.split(",");
	for (i=0; i<arrIds.length && i<arrErrs.length; i++)
	{
		var obj = document.getElementById(arrIds[i]);
		if (obj == null)
			continue
		if (obj.value.trim().length == 0)
		{
			obj.focus();
			alert(arrErrs[i]);
			return true;
		}
	}
	return false;
	
}