<!--

if (document.images) {
	// Initialize Variables
	var defaultInactivePath  = "";
	var defaultActivePath    = "_over";
	var defaultExt           = ".gif";
	var rolloverImages       = new Object();
	var isCached             = false;
	
	// Precache images
	rolloverImages["home"]    		= new rolloverObject("nav_home", 			166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["whoweare"]      = new rolloverObject("nav_whoweare", 		166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["news"]       	= new rolloverObject("nav_news",  			166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["catalog"]  		= new rolloverObject("nav_catalog",  		166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["patientcenter"] = new rolloverObject("nav_patientcenter",	166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["medicalinfo"]   = new rolloverObject("nav_medicalinfo", 	166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["links"]       	= new rolloverObject("nav_links",  			166, 33, defaultInactivePath, defaultActivePath, defaultExt);
	rolloverImages["contact"]  		= new rolloverObject("nav_contact",  		166, 33, defaultInactivePath, defaultActivePath, defaultExt);	
	rolloverImages["directions"]    = new rolloverObject("nav_directions",  	166, 33, defaultInactivePath, defaultActivePath, defaultExt);
		
	isCached = true;
	
}

function rolloverObject(name, width, height, inactivePath, activePath, ext) {
	this.inactive      = new Image(width, height);
	this.inactive.src  = 'images/' + name + ext;
	this.active        = new Image(width, height);
	this.active.src    = 'images/' + name + defaultActivePath + ext;
	return true;
}

function activate(imageName) {
	if (document.images && isCached) document.images[imageName].src = rolloverImages[imageName].active.src;
	return true
}

function deactivate(imageName) {
	if (document.images && isCached) document.images[imageName].src = rolloverImages[imageName].inactive.src;
	return true
}	
	
// -->