// Creating Image Objects for Rollovers
if (document.images)
{
AboutOn=new Image(196, 25);
AboutOn.src="images/about_on.gif";
AboutOff=new Image(196, 25);
AboutOff.src="images/about_off.gif";

ImpotenceOn=new Image(195, 25);
ImpotenceOn.src="images/impotence_on.gif";
ImpotenceOff=new Image(195, 25);
ImpotenceOff.src="images/impotence_off.gif";

PartnersOn=new Image(195, 25);
PartnersOn.src="images/partners_on.gif";
PartnersOff=new Image(195, 25);
PartnersOff.src="images/partners_off.gif";

HCPOn=new Image(197, 25);
HCPOn.src="images/hcp_on.gif";
HCPOff=new Image(197, 25);
HCPOff.src="images/hcp_off.gif";


}

var over = 'no';
var lastMenu = ' ';
var styleSheetElement;
var oldElement;

function menuOn(currentMenu) {
	over = 'yes';
	if ((browser == 'Netscape') && (version < 5)) {
		if (lastMenu != ' ')  {
			document.images[lastMenu].src = eval(lastMenu + 'Off.src');	
			eval('document.' + lastMenu + 'Menu.visibility = "hidden"');		
		}
		document.images[currentMenu].src = eval(currentMenu + 'On.src');
		eval('document.' + currentMenu + 'Menu.visibility = "visible"');	
		lastMenu = currentMenu;			
	}
	else {
		if (lastMenu != ' ') {
			eval('document.images[lastMenu].src = ' + lastMenu + 'Off.src');
			lastMenu = lastMenu + 'Menu';
			oldElement = document.getElementById(lastMenu);
			oldElement.style.visibility = "hidden";
		}
		eval('document.images[currentMenu].src = ' + currentMenu + 'On.src');
		var layerName = currentMenu + 'Menu';
		styleSheetElement = document.getElementById(layerName);
		styleSheetElement.style.visibility = "visible";
		lastMenu = currentMenu;		
	}

}

function overChecker(currentMenu) {
	over = 'no';
	lastMenu = currentMenu;
	setTimeout("menuOff()", 100);
}

function menuOff() 
{
	if (over == 'no')  {	
			if ((browser == 'Netscape') && (version < 5)) {
				document.images[lastMenu].src = eval(lastMenu + 'Off.src');
				eval('document.' + lastMenu + 'Menu.visibility = "hidden"');	
			}
			else {
			eval('document.images[lastMenu].src = ' + lastMenu + 'Off.src');
			styleSheetElement.style.visibility = "hidden";
			
		}
	}	
}
//special functions to keep on button on landing page


function overCheckerCur(currentMenu) {
	over = 'no';
	lastMenu = currentMenu;
	setTimeout("menuOffCur()", 100);
}

function menuOffCur() 
{
	if (over == 'no')  {	
			if ((browser == 'Netscape') && (version < 5)) {
				document.images[lastMenu].src = eval(lastMenu + 'On.src');
				eval('document.' + lastMenu + 'Menu.visibility = "hidden"');	
			}
			else {
			eval('document.images[lastMenu].src = ' + lastMenu + 'On.src');
			styleSheetElement.style.visibility = "hidden";
			
		}
	}	
}


// Pull-Down Menu Navigation Function
function PageChanger(page) {           
    document.NavForm.PullDown.options[0].selected=true;
	document.location= page;       
    
}