var objHttp;
objHttp=false;
try{
	objHttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (E) 
{try {objHttp = new ActiveXObject("Microsoft.XMLHTTP");} 
catch (E) {objHttp = false;}}
if (!objHttp && typeof XMLHttpRequest!='undefined') 
{
	try {objHttp = new XMLHttpRequest();} 
	catch (E) {objHttp=false;} 
}
if (!objHttp && window.createRequest) 
{
	try{objHttp = window.createRequest();} 
	catch (E) {objHttp=false;}
}

function getPpCount()
{
	if (objHttp)
	{							
		sendURL="scripts/getPpCount.asp";
		objHttp.open("GET",sendURL,true);
		objHttp.onreadystatechange=function()
		{
			if (objHttp.readyState == 4) 
			{
				if (objHttp.status == 200)
				{
					var rText = objHttp.responseText;
					//document.getElementById("text").innerText = rText;
				}
			}
		}
		objHttp.send(null);
		objHttp.close;			
	}
}

function getPp()
{
	if (objHttp)
	{							
		sendURL="scripts/getPp.asp";
		objHttp.open("GET",sendURL,true);
		objHttp.onreadystatechange=function()
		{
			if (objHttp.readyState == 4) 
			{
				if (objHttp.status == 200)
				{
					rText = objHttp.responseText;
					//document.getElementById("text").innerText = rText;
					if (rText == "")
					{
						document.frm.s1.options[0] = new Option('--选择品牌--','');
						document.frm.s2.options[0] = new Option('--选择车系--','');
						document.frm.s3.options[0] = new Option('--选择车型--','');
					}
					else
					{
						document.frm.s1.length = 0;
						document.frm.s1.options[0] = new Option('--选择品牌--','');
    				var a0 = rText.split("!");
    				//document.getElementById("text").innerText = a0[1];
    				var a1 = a0[1].split("#");
    				for(i=0;i<a0[0];i++)
						{
							var a2 = a1[i].split("@");
     					var pp_id = a2[0];
     					var pp = a2[1]; 
     					document.frm.s1.options[i+1] = new Option(a2[1],a2[0]);
     					//document.frm.s1.options[i] = new Option(a2[1],a2[0]);
  						document.frm.s1.onchange = new Function("getCx()");
						}
					}
				}
			}
		}
		objHttp.send(null);
		objHttp.close;			
	}
}
	
function getCx()
{
	if (document.frm.s1.value == "") 
	{
		document.frm.s2.length = 0;
		document.frm.s3.length = 0;
		document.frm.s2.options[0] = new Option('--选择车系--','');
		document.frm.s3.options[0] = new Option('--选择车型--','');
		return;
	}
	if (objHttp)
	{					
		sendURL="scripts/getCx.asp?pp_id=" + document.getElementById("s1").value;
		objHttp.open("GET",sendURL,true);
		objHttp.onreadystatechange=function()
		{
			if (objHttp.readyState == 4) 
			{
				if (objHttp.status == 200)
				{
					rText = objHttp.responseText;
					//document.getElementById("text").innerText = rText;
					if (rText == "")
					{
						document.frm.s2.options[0] = new Option('--选择车系--','');
						document.frm.s3.options[0] = new Option('--选择车型--','');
					}
					else
					{
						document.frm.s2.length = 0;
						document.frm.s3.length = 0;
						document.frm.s2.options[0] = new Option('--选择车系--','');
						document.frm.s3.options[0] = new Option('--选择车型--','');
    				var a0 = rText.split("!");
    				//document.getElementById("text").innerText = a0[1];
    				var a1 = a0[1].split("#");
    				for(i=0;i<a0[0];i++)
						{
							var a2 = a1[i].split("@");
     					var pp_id = a2[0];
     					var pp = a2[1]; 
     					document.frm.s2.options[i+1] = new Option(a2[1],a2[0]);
     					//document.frm.s2.options[i] = new Option(a2[1],a2[0]);
     					document.frm.s2.onchange = new Function("getXh()");
						}
					}
				}
			}
		}
		objHttp.send(null);
		objHttp.close;			
	}
}	

function getXh()
{
	if (document.frm.s2.value == "") 
	{
		document.frm.s3.length = 0;
		document.frm.s3.options[0] = new Option('--选择车型--','');
		return;
	}
	if (objHttp)
	{					
		sendURL="scripts/getXh.asp?pp_id=" + document.getElementById("s1").value + "&cx_id=" + document.getElementById("s2").value;
		objHttp.open("GET",sendURL,true);
		objHttp.onreadystatechange=function()
		{
			if (objHttp.readyState == 4) 
			{
				if (objHttp.status == 200)
				{
					rText = objHttp.responseText;
					//document.getElementById("text").innerText = rText;
					if (rText == "")
					{
						document.frm.s3.options[0] = new Option('--选择车型--','');
					}
					else
					{
						document.frm.s3.length = 0;
    				document.frm.s3.options[0] = new Option('--选择车型--','');
    				var a0 = rText.split("!");
    				//document.getElementById("text").innerText = a0[1];
    				var a1 = a0[1].split("#");
    				for(i=0;i<a0[0];i++)
						{
							var a2 = a1[i].split("@");
     					var pp_id = a2[0];
     					var pp = a2[1]; 
     					document.frm.s3.options[i+1] = new Option(a2[1],a2[0]);
     					//document.frm.s3.options[i] = new Option(a2[1],a2[0]);
						}
					}
				}
			}
		}
		objHttp.send(null);
		objHttp.close;			
	}
}