// JavaScript Document

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function popUp(strAnchor) {	  
          // This old script loads up a single page with a named anchor to a glossary item
		  //var strFullUrl = "/headsets/glossary/glossary_pop.html#" + strAnchor;
		  var strFullUrl = "/popups/" + strAnchor + ".php";
		  var objGlossary = window.open(strFullUrl,'popup','width=200,height=300,screenX=100,screenY=150,top=150,left=100,resizable=yes,scrollbars=no');
		  objGlossary.focus();
	  };
	  
// AJAX REQUEST - USED FOR LIVEPERSON LOGGING
var req=null;
function getXMLHTTPRequest(){
  var xRequest=null;
  if (window.XMLHttpRequest){
    xRequest=new XMLHttpRequest();
  } else if (typeof ActiveXObject != "undefined"){
    xRequest=new ActiveXObject ("Microsoft.XMLHTTP");
  }
  return xRequest;
}
function sendRequest(url,params,HttpMethod){
  if (!HttpMethod){
    HttpMethod="GET";
  }
  req=getXMLHTTPRequest();
  if (req){
    req.onreadystatechange = onReadyStateChange;
	req.open(HttpMethod,url,true);
	req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	req.send(params);
  }
}
function onReadyStateChange(){
  var ready=req.readyState;
  var data=null;
  if (ready==4){
    data=req.responseText;
  }else{
    data="loading..."+ready;
  }
}