oneon=new Image
	oneoff=new Image	
	twoon=new Image
	twooff=new Image
	threeon=new Image
	threeoff=new Image
	
	oneon.src="images/img_practice_roll.jpg"
	oneoff.src="images/img_practice.jpg"
	twoon.src="images/img_lytec_roll.jpg"
	twooff.src="images/img_lytec.jpg"
	threeon.src="images/img_medisoft_roll.jpg"
	threeoff.src="images/img_medisoft.jpg"
	// JavaScript Document// JavaScript Document