var xmlHttp
function productsearch()
{
var product=document.form1.product.value;
var cfm1=document.form1.cfm1.value;
var cfm2=document.form1.cfm2.value;
var mbar1=document.form1.mbar1.value;
var mbar2=document.form1.mbar2.value;
var bar1=document.form1.bar1.value;
var bar2=document.form1.bar2.value;
var hp1=document.form1.hp1.value;
var hp2=document.form1.hp2.value;
var kw1=document.form1.kw1.value;
var kw2=document.form1.kw2.value;
if(document.form1.ch[0].checked)
 var ch=document.form1.ch[0].value;
if(document.form1.ch[1].checked)
 var ch=document.form1.ch[1].value;
if(document.form1.ch[2].checked)
 var ch=document.form1.ch[2].value;
if(document.form1.ch[3].checked)
 var ch=document.form1.ch[3].value;
if(document.form1.ch[4].checked)
 var ch=document.form1.ch[4].value;
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
 alert ("Browser does not support HTTP Request")
 return
}
var url="ajax_search.php?cfm1="+cfm1+"&cfm2="+cfm2+"&bar1="+bar1+"&bar2="+bar2+"&hp1="+hp1+"&hp2="+hp2+"&ch="+ch+"&mbar1="+mbar1+"&mbar2="+mbar2+"&kw1="+kw1+"&kw2="+kw2+"&product="+product
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{
document.getElementById("products").innerHTML=xmlHttp.responseText
}
}

function GetXmlHttpObject()
{
 var objXMLHttp=null
 if (window.XMLHttpRequest)
 {
   objXMLHttp=new XMLHttpRequest()
 }
 else if (window.ActiveXObject)
 {
  objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
 }
 return objXMLHttp
}