function SelectRoute(memberid){
	ids=document.getElementsByName('id');
	list='';
	var flag = false;
	var count = 0;
	for(i=0;i<ids.length;i++){
		if(ids[i].checked==true){
			list=list+','+ids[i].value;
			flag = true;
			count++;
		}
	}
	if(flag){
		if(count>4){
			alert('一次最多比较四条线路！')
		}else{
			list=list.substr(1);
			url = "http://www.17u.com/price_report/tripline_compare.asp?id="+memberid+"&lineid="+list;
			location.href=url;				
		}	
	}else{
		alert('请至少选择一条线路！');
	}
}