offshoreover = new Image();
	offshoreover.src = "images/offshore_on.gif";
	offshoreoff = new Image();
	offshoreoff.src = "images/offshore_off.gif";
	
	contractover = new Image();
	contractover.src = "images/contract_on.gif";
	contractoff = new Image();
	contractoff.src = "images/contract_off.gif";

	fulltimeover = new Image();
	fulltimeover.src = "images/fulltime_on.gif";
	fulltimeoff = new Image();
	fulltimeoff.src = "images/fulltime_off.gif";