// preload images
	var services1  = new Image();
	var services2  = new Image();
	var services3  = new Image();
	var services4  = new Image();
	var services5  = new Image();
	var services6  = new Image();
	var services1h = new Image();
	var services2h = new Image();
	var services3h = new Image();
	var services4h = new Image();
	var services5h = new Image();
	var services6h = new Image();
	
	services1.src  = "/img/gui/services1.gif";
	services2.src  = "/img/gui/services2.gif";
	services3.src  = "/img/gui/services3.gif";
	services4.src  = "/img/gui/services4.gif";
	services5.src  = "/img/gui/services5.gif";
	services6.src  = "/img/gui/services6.gif";
	services1h.src = "/img/gui/services1h.gif";
	services2h.src = "/img/gui/services2h.gif";
	services3h.src = "/img/gui/services3h.gif";
	services4h.src = "/img/gui/services4h.gif";
	services5h.src = "/img/gui/services5h.gif";
	services6h.src = "/img/gui/services6h.gif";