var new_kit;

function showKits(q_kit){
new_kit=GetXmlHttpObject()
if (new_kit==null)
 {
 alert ("Su navegador no soporta AJAX");
 return
 }
var url="kits.php"
url=url+"?que_kit="+q_kit;
url=url+"&sid="+Math.random();
new_kit.onreadystatechange=newKit;
new_kit.open("GET",url,true);
new_kit.send(null);

}

function newKit() 
{ 
if (new_kit.readyState==4 || new_kit.readyState=="complete")
 { 
 document.getElementById("main_cont").innerHTML=new_kit.responseText; 
 } 
}

function GetXmlHttpObject()
{
var new_kit=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 new_kit=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  new_kit=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  new_kit=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return new_kit;
}