//window.onload = function() {
	//preloadImages();
	//initRollovers();
	//expandOnload();
//}

var browser = navigator.appName;
var IE = "Microsoft Internet Explorer";
var vendor = navigator.vendor;
var safari = "Apple Computer, Inc.";

/* Begin show/hide Flash navigation function */
function flashNavigation(state) {
	var fullFlashNav = $('flashNav');
	
	if (state == "visible"){
		fullFlashNav.style.height="400px";	
	}
	
	else {
		fullFlashNav.style.height="20px";
	}
}

function fromFlash(page) {
	window.location=page;
}

/* End show/hide Flash navigation function */

/* Begin preload images function */
var loadImg = new Array('rackets_wLine_up_on.png','rackets_wLine_down_on.png','rackets_nCode_up_on.png','rackets_nCode_down_on.png','rackets_junior_up_on.png','rackets_junior_down_on.png','btn_enlarge_on.gif','btn_accessories_on.gif','btn_more_on.gif','btn_user_reviews_on.gif','btn_download_pdf_on.gif','btn_download_specs_on.png','btn_prod_compare_on.gif');

function preloadImages() {
	for (i=0; i<loadImg.length; i++) {
		var images = new Array();
		images[i] = new Image;
		images[i].src = 'http://www.wilson.com/tennis/rackettitles/' + loadImg[i];
	}
}
/* End preload images function */

/* Begin expandable table function */

function imageSwap(mouseevent,arrowstate,id) {
	if (mouseevent == 'over'){
		$(id+'_img').setAttribute('src','http://www.wilson.com/tennis/rackettitles/'+ id +'_'+arrowstate+'_on.png');
	}
	
	else if (mouseevent == 'out') {
		$(id+'_img').setAttribute('src','http://www.wilson.com/tennis/rackettitles/'+ id +'_'+arrowstate+'_off.png');
	}	
	else {
		return;
	}
}

 function expand(mousestate,headerID) {
	var h3Expand = $(headerID);
	var tblExpand = $(headerID+'_table');
	var c = classAttr();
	var imgObj = $(headerID + "_img");
	var alt = getImgAlt(imgObj);
	var height = getImgHeight(imgObj);
	var width = getImgWidth(imgObj);
	
	if (tblExpand.style.display == "block") {
		tblExpand.style.display = "none";
		h3Expand.setAttribute(c,'expandHeader');
		h3Expand.onmouseover = function(){imageSwap('over','up',headerID);};
		h3Expand.onmouseout = function(){imageSwap('out','up',headerID);};
		h3Expand.innerHTML = "<img src=\"http://www.wilson.com/tennis/rackettitles/"+ headerID+"_up_"+mousestate+".png\" id=\""+headerID+"_img\" width=\""+width+"\" height=\""+height+"\" alt=\""+alt+"\" title=\""+alt+"\" />";
		
	}
	
	else {
		tblExpand.style.display = "block";
		h3Expand.setAttribute(c,'expandedHeader');
		h3Expand.onmouseover = function(){imageSwap('over','down',headerID);};
		h3Expand.onmouseout = function(){imageSwap('out','down',headerID);};
		h3Expand.innerHTML = "<img src=\"http://www.wilson.com/tennis/rackettitles/"+ headerID+"_down_"+mousestate+".png\" id=\""+headerID+"_img\" width=\""+width+"\" height=\""+height+"\" alt=\""+alt+"\" title=\""+alt+"\" />";
		
	}
}

function expandOnload() {
	var sURL = window.document.URL.toString();
	
	if (sURL.indexOf("?") > 0){//If there is a query string.
		var params = getURLParameters('split');
		var openTbl = "rackets_" + params;
		
		/*******************
		If there is no query string, no parameter value, or the wrong parameter name has been used, do nothing. - KM
		*******************/
		if ((params == null) || (params == '')) {
			;
		}
		
		else {
			expand('off',openTbl);
		}	
	}
}
/* End expandable table function */

/* Begin image rollover funtion */
function initRollovers(){	
	var rollovers = getElementsByClass('rollover',null,null);
	
	if (rollovers.length > 0){
		for(var i=0;i<rollovers.length;i++){
			addEvent(rollovers[i],'mouseover',rollover);	
			addEvent(rollovers[i],'mouseout',rollover);	
		}		
	}
}

function rollover(event) {	//This simply adds a rollover function to any image with a class of "rollover".
	var id = getTarget(event).id;
	var etype = event.type;
	var imgExt = getImgExt($(id));
	
	var img = id.split('_image')[0];
	
	if (etype == 'mouseover'){
		$(id).setAttribute('src','http://www.wilson.com/tennis/rackettitles/'+img + "_on." + imgExt);
	}
	
	else if (etype == 'mouseout') {
		$(id).setAttribute('src','http://www.wilson.com/tennis/rackettitles/'+img + "_off." + imgExt);
	}
}
/* End image rollover function */

/* Begin pop up function */
function popWindow(href,title,parameters) {
 window.open(href,title,parameters);
}
/* End pop up function */

/* Begin Flash detection and loading */

/* End Flash detection and loading  */

/* Begin helper functions */
/* Extracted from Prototype JS Library, http://prototype.conio.net/
 Written by Sam Stephenson, http://conio.net/ */
function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string') element = (document.getElementById) ? document.getElementById(element) : eval("document.all."+element) ;
    if (arguments.length == 1) return element;
    elements.push(element);
  }
  return elements;
}

function getElementsByClass(className, elm, tag){
	if(elm == null) elm = document;
	if(tag == null) tag = '*';
	var elems = (tag == "*" && document.all)? document.all : elm.getElementsByTagName(tag);
	var returnElems = new Array();
	className = className.replace(/\-/g, "\\-");
	var pattern = new RegExp("(^|\\s)" + className + "(\\s|$)");
	for(var i=0; i<elems.length; i++){
		if(pattern.test(elems[i].className)) returnElems.push(elems[i]);
	}
	return returnElems
}

/* Function to return the class attribute. IE and all other standards compliant browsers have different names for the class attribute object. */
function classAttr(){
	if (browser == IE ){
		class_att = 'className';
	}
	else {
		class_att = 'class';
	}
	
	return class_att;
	
}

/* Begin function to get img extension */
function getImgExt(obj){
	var src = obj.getAttribute('src');
	var imgExtPosition = src.lastIndexOf('.') + 1;	//Get the extension. Add 1 to get only the extension, not .extension
	
	var extension;
	
	if(src.match('clearpixel.gif')){	//If IE and the image is a PNG, return 'png', because the PNG transparency function causes the img src to be clearpixel.gif.
		extension = 'png';
	}
	
	else {
		var extension = src.slice(imgExtPosition);
	}
	return extension;
}
/* End function to get img extension */

/* Begin function to get img alt text */
function getImgAlt(obj){
	var alt_text = obj.getAttribute('alt');	
	return alt_text;
}
/* End function to get img alt text */

/* Begin function to get img height text */
function getImgHeight(obj){
	var img_h = obj.getAttribute('height');	
	return img_h;
}
/* End function to get img alt text */

/* Begin function to get img width text */
function getImgWidth(obj){
	var img_w = obj.getAttribute('width');	
	return img_w;
}
/* End function to get img alt text */

/* Functions to add/remove event listeners to objects
	Written by John Resig, http://ejohn.org */
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) obj.addEventListener( type, fn, false );
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function removeEvent( obj, type, fn ) {
	if (obj.removeEventListener) obj.removeEventListener( type, fn, false );
	else if (obj.detachEvent) {
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}
/* Functions to handle cross-browser events.
 Written by Zack Gilbert of Seen Creative, http://www.weareseencreative.com. */
/* get the target of an event object */
function getTarget(e) {
	return (e.target) ? e.target : e.srcElement;
}
/* Begin registratio popup function */
function open_reg(url){
    screenwidth = window.screen.width;
    screenheight = window.screen.height;

    windowleft = (screenwidth - 630)/2;
    windowtop = (screenheight - 610)/2;

    contacts = window.open(url,'open_contacts','width=630,height=610,history=no,resizable=no,status=no,scrollbars=yes,menubar=no,top=' + windowtop + ',left=' + windowleft);
}
/* End registration popup function */