function SelectRoute(){
	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 = "/tours/do_compare/"+list;
			location.href=url;				
		}	
	}else{
		alert('请至少选择一条线路！');
	}
}

function hideDeparture(){
	//selector = e.target || e.srcElement;
	document.getElementById('departure_selector').style.display = 'none';
}
function showDeparture(){
	hideDeparture();
	var selector = document.getElementById('selector');
	var posX = findPosX(selector)-45;
	var posY = findPosY(selector)+15;
	document.getElementById('departure_selector').style.left = posX + 'px';
	document.getElementById('departure_selector').style.top = posY + 'px';
	document.getElementById('departure_selector').style.position = 'absolute';
	document.getElementById('departure_selector').style.display = 'block';
}