if (document.images) { 
	var enabled = 1; 
	var images = new Array ("link_booking");
	var ImageObjects = new Array(); 
	for (i = 0; i < images.length; i++) { 
		name = images[i]; 
		ImageObjects[name] = new ImageObject(name); 
	} 
} 

function ImageObject(name) { 
	this.on = new Image; 
	this.on.src = "images/"+ name + "_ro.gif"; 
	this.off = new Image; 
	this.off.src = "images/" + name + "_off.gif"; 
} 

function rollover(imageName){ 
	if (enabled) { 
		document[imageName].src = ImageObjects[imageName].on.src; 
	} 
}

function rollout(imageName){ 
	if (enabled) { 
		document[imageName].src = ImageObjects[imageName].off.src;
	} 
}