//Preload Navigation Images
var aryImages = new Array("main_nav_first.jpg", "main_nav_first_active.jpg","main_nav_last.jpg", "main_nav_last_active.jpg","main_nav.jpg", "main_nav_active.jpg","header_tab.jpg", "header_tab_active.jpg");
var aryPreload = new Array();
 
for(var i = 0; i < aryImages.length; i++){
	aryPreload[i]= new Image();
	aryPreload[i].src = "/images/background/" + aryImages[i];
}

/* 
 * Cross-browser event handling, by Scott Andrew
 */
function addEvent(element, eventType, lamdaFunction, useCapture) {
    if (element.addEventListener) {
        element.addEventListener(eventType, lamdaFunction, useCapture);
        return true;
    } else if (element.attachEvent) {
        var r = element.attachEvent('on' + eventType, lamdaFunction);
        return r;
    } else {
        return false;
    }
}

/* 
 * Kills an event's propagation and default action
 */
function knackerEvent(eventObject) {
    if (eventObject && eventObject.stopPropagation) {
        eventObject.stopPropagation();
    }
    if (window.event && window.event.cancelBubble ) {
        window.event.cancelBubble = true;
    }
    
    if (eventObject && eventObject.preventDefault) {
        eventObject.preventDefault();
    }
    if (window.event) {
        window.event.returnValue = false;
    }
}

/* 
 * Safari doesn't support canceling events in the standard way, so we must
 * hard-code a return of false for it to work.
 */
function cancelEventSafari() {
    return false;        
}

/* 
 * Cross-browser style extraction, from the JavaScript & DHTML Cookbook
 * <http://www.oreillynet.com/pub/a/javascript/excerpt/JSDHTMLCkbk_chap5/index5.html>
 */
function getElementStyle(elementID, CssStyleProperty) {
    var element = document.getElementById(elementID);
    if (element.currentStyle) {
        return element.currentStyle[toCamelCase(CssStyleProperty)];
    } else if (window.getComputedStyle) {
        var compStyle = window.getComputedStyle(element, '');
        return compStyle.getPropertyValue(CssStyleProperty);
    } else {
        return '';
    }
}

/* 
 * CamelCases CSS property names. Useful in conjunction with 'getElementStyle()'
 * From <http://dhtmlkitchen.com/learn/js/setstyle/index4.jsp>
 */
function toCamelCase(CssProperty) {
    var stringArray = CssProperty.toLowerCase().split('-');
    if (stringArray.length == 1) {
        return stringArray[0];
    }
    var ret = (CssProperty.indexOf("-") == 0)
              ? stringArray[0].charAt(0).toUpperCase() + stringArray[0].substring(1)
              : stringArray[0];
    for (var i = 1; i < stringArray.length; i++) {
        var s = stringArray[i];
        ret += s.charAt(0).toUpperCase() + s.substring(1);
    }
    return ret;
}

/*
 * Disables all 'test' links, that point to the href '#', by Ross Shannon
 */
function disableTestLinks() {
  var pageLinks = document.getElementsByTagName('a');
  for (var i=0; i<pageLinks.length; i++) {
    if (pageLinks[i].href.match(/[^#]#$/)) {
      addEvent(pageLinks[i], 'click', knackerEvent, false);
    }
  }
}

/* 
 * Cookie functions
 */
function createCookie(name, value, days) {
    var expires = '';
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days*24*60*60*1000));
        var expires = '; expires=' + date.toGMTString();
    }
    document.cookie = name + '=' + value + expires + '; path=/';
}

function readCookie(name) {
    var cookieCrumbs = document.cookie.split(';');
    var nameToFind = name + '=';
    for (var i = 0; i < cookieCrumbs.length; i++) {
        var crumb = cookieCrumbs[i];
        while (crumb.charAt(0) == ' ') {
            crumb = crumb.substring(1, crumb.length); /* delete spaces */
        }
        if (crumb.indexOf(nameToFind) == 0) {
            return crumb.substring(nameToFind.length, crumb.length);
        }
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name, '', -1);
}

function image_replace(targ_name,in_name,in_state) { 
var lclException; 
	try { 
		var elemlist, elemobj, elemindex,	elemcount, elemimage;
		// find all elements w/req name.  Not just <img>, also <input type=image> 
		elemlist  = document.getElementsByName (targ_name);			
		elemcount = elemlist.length;
		elemimage = eval(in_name + "_" + in_state + ".src");
		for (var elemindex=0; elemindex < elemcount; elemindex++) {
			elemobj = elemlist[elemindex];
			elemobj.src = elemimage;
//			alert(elemobj.src);		
		}
	} 
	catch (lclException) { }
}
function image_swap(in_name,in_state) { var lclException; try { getnamedelement(in_name).src=eval(in_name + "_" + in_state + ".src"); } catch (lclException) { } }
function getnamedelement(targ_name) { 
var lclException; 
	try { 
		var elemlist, elemobj, elemindex, elemcount, elemattr, elemstring;
		// find all elements w/req name.  Not just <img>, also <input type=image> 
		elemlist  = document.getElementsByName (targ_name);			
		elemcount = elemlist.length;
		for (var elemindex=0; elemindex < elemcount; elemindex++) {
            elemobj = elemlist[elemindex];
            if (elemcount > 1) alert('element with ' + elemcount + ' matches.');
            return elemobj;
        }
        return null;
	} 
	catch (lclException) { 
	// alert(lclException); // issue error
	}
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
	window.open(theURL,winName,features);
}

function redirectParent(theUrl, closePopup, closeDelay) {
	opener.location.href = theUrl;
		if(closePopup == true)setTimeout('self.close()',delay);
}