function rollover(img, state){

	var oldImage = "";

	if(document.images){
	
		if(state == "on"){
		
			if(oldImage != ""){
				document.images[oldImage].src = "images/home/lilac.gif";
			}
			document.images[img].src = "images/home/green.gif";
			
		}
		
		else{
			document.images[img].src = "images/home/lilac.gif";
		}
		oldImage = img;
	
	}

}