//返回请求URL的指定字段
function getQuery(name){
　　var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
　　var r = location.href.substr(location.href.indexOf("\?")+1).match(reg);
　　if (r!=null) return r[2]; return "";
} 

//初始化选择框
function initOptions(objID,isSelect){
var objOptions=document.getElementById(objID);
if(objOptions==null) return;
try{
	for(var i=0;i<objOptions.length;i++){
		if(objOptions.options[i].value==isSelect){
			objOptions.options[i].selected=true;
			break;
		}
	}
} catch(e) { setTimeout("initOptions('"+objID+"',"+isSelect+")",100)}

}