//Browser Detection

var bType;
function BDetect () {
	if (document.layers) {
	bType = "ns4";
	}
	else if (document.getElementById) {
	bType = "dom"
	}
	else if (document.all && !document.getElementById) {
	bType = "ie4";
	}
	else {
	bType = "other";
	}
}
BDetect();

//Mac ?
isMac = 0;
if (navigator.appVersion.indexOf("Mac") > -1)	{
	isMac	= 1;
	//alert("isMac");
}

// Popup Window
function popWin(url,wd,ht,scroll){
	useScroll = 0;
	if (scroll == 1)	{
		useScroll = 1;
	}
	height = ht;
	width = wd;
	thisURL = url;
	popupWin=window.open(thisURL,"","width=" + width + ",height=" + height + ", scrollbars=" + useScroll)
}

function changeLocation(url){
	window.location=url
}

function changeParent(url)	{
	window.opener.location = url;
	self.close()
}

if (navigator.appName == "Netscape") {			
	layerRef="document.getElementById(";
	styleSwitch=").style";
	} else {
		layerRef="document.all";
		styleSwitch=".style";
}

//Image on
function image_on(imgName) {
	if (navigator.appName == "Netscape") {			
		ActiveImage = eval(imgName + "_active.src");
		document[imgName].src = ActiveImage;		
	}
	else{
		if (document.readyState == "complete"){	
			ActiveImage = eval(imgName + "_active.src");
			document[imgName].src = ActiveImage;		
			}
	}	
}
	
//Image off
function image_off(imgName) {	
	if (navigator.appName == "Netscape") {	
		DefaultImage = eval(imgName + "_default.src");		
		document[imgName].src =DefaultImage;
	} else {
		if (document.readyState == "complete"){	
			DefaultImage = eval(imgName + "_default.src");		
			document[imgName].src =DefaultImage;
		}			
	}
}	


if (document.images){		
	club_active = new Image;                             
	club_active.src = "images/lnk_sustain_yourself_club_on.gif";                     
	club_default = new Image;                            
	club_default.src = "images/lnk_sustain_yourself_club.gif";          

	news_active = new Image;                             
	news_active.src = "images/lnk_news_on.gif";                     
	news_default = new Image;                            
	news_default.src = "images/lnk_news.gif";                   

	contact_active = new Image;                             
	contact_active.src = "images/lnk_contact_us_on.gif";                     
	contact_default = new Image;                            
	contact_default.src = "images/lnk_contact_us.gif";                   

	lifestyle_active = new Image;                             
	lifestyle_active.src = "images/nav_sustain_your_lifestyle_on.gif";                     
	lifestyle_default = new Image;                            
	lifestyle_default.src = "images/nav_sustain_your_lifestyle.gif";

	science_active = new Image;                             
	science_active.src = "images/nav_science_msr_on.gif";                     
	science_default = new Image;                            
	science_default.src = "images/nav_science_msr.gif";          

	buy_active = new Image;                             
	buy_active.src = "images/nav_buy_now_on.gif";                     
	buy_default = new Image;                            
	buy_default.src = "images/nav_buy_now.gif";          

	btnHome_active = new Image;                             
	btnHome_active.src = "images/nav_home_on.gif";                     
	btnHome_default = new Image;                            
	btnHome_default.src = "images/nav_home.gif";          
}