/*** BROWSER DETECTION OBJECT ***/
var is = {  ie:   navigator.appName == 'Microsoft Internet Explorer', //returns true or false
		    ns:   navigator.appName == 'Netscape',//returns true or false
		    vs:   parseFloat(navigator.appVersion.substr(21)) || parseFloat(navigator.appVersion)}//returns integer

function swapElements (num,st) {
	swapDivs(num,st);
	//heroSwap(num,st); //THIS FUNCTION SHOULD BE EMBEDDED IN EACH PRODUCT PAGE WITH PAGE-SPECIFIC IMAGE REFS
}		

/*** DOM VARIABLES FOR USE WITH swapDivs FUNCTION ***/
/*** NOTE: domStr1 and domStr2 should branch off DOM specific properties rather than browser version
	 due to the fact that Netscape browsers 4.75+ and Netscape 6 all respond as being version 5 browsers ***/
var domStr1 = (document.all)?'all.':(document.getElementById)?'getElementById("':'';
var domStr2 = (document.all)?'.style':(document.getElementById)?'").style':'';
var brOk = (is.ie&&is.vs>='4'||is.ns&&is.vs>='4')?true:false;

function swapHomeDivs (div,num) {
	if (brOk) {
		var vis = (num==0)?'hidden':'visible';
		eval('document.' + domStr1 + div + domStr2 + '.visibility = "' + vis + '"');
	}		
}

function swapDivs (div,num) {
	if (brOk) {		
		if(num==0) {
			eval('document.' + domStr1 + 'f' + div + domStr2 + '.visibility = "hidden"');
			eval('document.' + domStr1 + 'f0' + domStr2 + '.visibility = "visible"');
		} else {
			eval('document.' + domStr1 + 'f' + div + domStr2 + '.visibility = "visible"');
			eval('document.' + domStr1 + 'f0' + domStr2 + '.visibility = "hidden"');
		}
	}		
}


function openCoupon() {
  window.open("/hardware/mouse/coupon.asp","coupon_wnd","height=450,width=641,left=150,top=150,toolbar,menubar,scrollbars");
}


function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);


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) { //v4.0
  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 && document.getElementById) x=document.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 MM_changeProp(objName,x,theProp,theValue) { //v3.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)) eval("obj."+theProp+"='"+theValue+"'");
}

function MM_setTextOfLayer(objName,x,newText) { //v3.0
  if ((obj=MM_findObj(objName))!=null) with (obj)
    if (navigator.appName=='Netscape') {document.write(unescape(newText)); document.close();}
    else innerHTML = unescape(newText);
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}
//browser vars
var agt=navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ns = !document.all;
var is_ie4 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5")==-1) && (agt.indexOf("msie 6")==-1));
var is_mac    = (agt.indexOf("mac")!=-1);
function popupFeature(url) {
  window.open(url,"_blank","height=320,width=496,left=250,top=200,scrollbars=yes");
}