function check_car_eva()
{ 
	
    var errorMsg = ""; 

	if (document.getElementById("province").value=="-1"){ 
		errorMsg += "\n 请选择省！";
		document.getElementById("province").focus();
		alert(errorMsg);
		return false;
	}
	
	if (document.getElementById("city").value=="-1"){ 
		errorMsg += "\n 请选择市！";
		document.getElementById("city").focus();
		alert(errorMsg);
		return false;
	}
	if (document.getElementById("car_status").value=="-1"){ 
		errorMsg += "\n 请选择车况！";
		document.getElementById("status").focus();
		alert(errorMsg);
		return false;
	}
   if (document.getElementById("typeid").value=="-1"){ 
		errorMsg += "\n 请选择车类！";
		document.getElementById("typeid").focus();
		alert(errorMsg);
		return false;
	}
	if (document.getElementById("ppid").value=="-1"){ 
		errorMsg += "\n 请选择品牌！";
		document.getElementById("ppid").focus();
		alert(errorMsg);
		return false;
	}
	if (document.getElementById("cxid").value=="-1"){ 
		errorMsg += "\n 请选择车型！";
		document.getElementById("cxid").focus();
		alert(errorMsg);
		return false;
	}
	if (document.getElementById("purpose").value=="-1"){ 
		errorMsg += "\n 请选择原车用途！";
		document.getElementById("purpose").focus();
		alert(errorMsg);
		return false;
	}

	if (document.getElementById("year").value=="-1"){ 
		errorMsg += "\n 请选择车辆出厂日期！";
		document.getElementById("year").focus();
		alert(errorMsg);
		return false;
	}

	if (document.getElementById("kilo").value=="-1"){ 
		errorMsg += "\n 请选择车辆行驶里程！";
		document.getElementById("kilo").focus();
		alert(errorMsg);
		return false;
	}
	
	if (document.getElementById("cj").value=="1"&&document.getElementById("eprice").value==''){ 
		errorMsg += "\n 请填写原购车价格！";
		document.getElementById("eprice").focus();
		alert(errorMsg);
		return false;
	}
	
	return true;
}
function check_logonstatus()
{
	if (document.getElementById("logon_status").value==1)
		return true;
	else
	{
		alert("请先登录，再进入下一步！");	
		return false;
	}
}
function ischecked(str,obj){
	for(i=0;i<obj.length;i++){
		j=str.indexOf(obj[i].value);
		if(j!="-1") obj[i].checked=true;
	}
 }
function doScript(s,t){
	if(s=="" || s==undefined) return false;

	if(t!=undefined) {
		t.disabled=true;
		window.status="正在载入数据....";
		t.options[t.selectedIndex].text="载入中...";
	}
//    var s = '<script src="'+s+'"></script>';
    var s1 = document.createElement("script");
    s1.src = s;
    document.body.appendChild(s1);
}
function show_price(s){
	if(s=="" || s==undefined) return false;
 //   	var s = '<script src='+s+'></script'+'>';	
    var s1 = document.createElement("script");
    s1.src = s;
	document.body.appendChild(s1);
}
function FixWidth(selectObj)
{
    var newSelectObj = document.createElement("select");
    newSelectObj = selectObj.cloneNode(true);
    newSelectObj.selectedIndex = selectObj.selectedIndex;
    newSelectObj.onmouseover = null;
    
    var e = selectObj;
    var absTop = e.offsetTop;
    var absLeft = e.offsetLeft;
    while(e = e.offsetParent)
    {
        absTop += e.offsetTop;
        absLeft += e.offsetLeft;
    }
    with (newSelectObj.style)
    {
        position = "absolute";
        top = absTop + "px";
        left = absLeft + "px";
        width = "";
    }
    
    var rollback = function(){ RollbackWidth(selectObj, newSelectObj); };
    newSelectObj.focus();
    newSelectObj.onblur = rollback;
    newSelectObj.onchange = rollback;
    
    selectObj.style.visibility = "hidden";
    document.body.appendChild(newSelectObj);
}

function RollbackWidth(selectObj, newSelectObj)
{
    selectObj.selectedIndex = newSelectObj.selectedIndex;
    selectObj.style.visibility = "visible";
    document.body.removeChild(newSelectObj);
}

function check_login()
{
			
			if(document.getElementById("username").value==""){
				alert("请输入用户名!");
				document.getElementById("username").focus();
				return false;
			}
			if(document.getElementById("pwd").value==""){
				alert("请输入密码!");
				document.getElementById("pwd").focus();
				return false;
			}
			if(document.getElementById("code_number").value==""){
				alert("请输入验证码!");
				document.getElementById("code_number").focus();
				return false;
			}
			return true;			
			
}

function SelectPids()
{
ObjName=GetObjID("pid")
  if (ObjName != -1){
  	if(ObjName.length<=0)
		return false;
  	for (i=0; i<ObjName.length; i++)
    	  ObjName.options[i].selected = true;
  }
}

function search_sy_fn1()
{
		var obj = document.getElementsByName("stype");
		if (obj[0].checked)
			window.location.href="search_sy.php?keyword="+document.getElementById("keyword").value;
		else
			window.location.href="http://www.oocheoo.com/search_cj.php?keyword="+document.getElementById("keyword").value;
}

function cars_act(t,id)
{
		switch(t)
		{
			case 1:
				var act_link = "search.php?target=CARPRICE&";
			break;
			case 2:
				var act_link = "member/mb_zone.php?act=oldcar_post&act1=step1&";
				if (document.getElementById('login').value != 1)
				{
					window.open('member/login.php', 'login', 'height=400, width=400, top=0, left=0, toolbar=no, menubar=no, status=no');
					return false;
				}
			break;
			case 3:
				var act_link = "view_car.php?";
			break;
		}
		
		act_link += "province="+document.getElementById('province').value+"&city="+document.getElementById('city').value+"&car_status="+document.getElementById('car_status').value+"&id="+id;
		
		window.open(act_link);
}
function change_act(obj)
{
	//On IE
	if(obj.fireEvent)
	{
		obj.fireEvent('onchange');
	}
	else if (document.createEvent)
	{
	//On Gecko based browsers
		var evt = document.createEvent('HTMLEvents');
		evt.initEvent('change', true, true);
		obj.dispatchEvent(evt);
	}
}