var xmlHttp

function showDevices(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="../devinfo/getDevices.php"
url=url+"?q="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

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

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

function setListBox(listbox) {
	
  switch(listbox.name) {
	case 'D1':
		if(listbox.value == 0) { 
    	document.forms['deviceget'].B1.disabled = true; 
    }
    else document.forms['deviceget'].D2.disabled = false;

		break;

	case 'D2':
	  if(listbox.value == 0) document.forms['deviceget'].B1.disabled = true; else document.forms['deviceget'].B1.disabled = false;
	  break;

  }
}