function mo(sImage,oPreload) {
	document[sImage].src = eval(oPreload + ".src")
	}
	//preload
	homeon 				= new Image();
	homeon.src 			= "img/btn_home_over.gif";
	homeoff 			= new Image();
	homeoff.src 		= "img/btn_home_off.gif";
	
	kennismakingon 		= new Image();
	kennismakingon.src 	= "img/btn_kennismaking_over.gif";
	kennismakingoff 	= new Image();
	kennismakingoff.src = "img/btn_kennismaking_off.gif";
	
	invalshoekenon 		= new Image();
	invalshoekenon.src 	= "img/btn_invalshoeken_over.gif";
	invalshoekenoff 	= new Image();
	invalshoekenoff.src = "img/btn_invalshoeken_off.gif";
	
	dienstverleningon 		= new Image();
	dienstverleningon.src 	= "img/btn_dienstverlening_over.gif";
	dienstverleningoff 		= new Image();
	dienstverleningoff.src 	= "img/btn_dienstverlening_off.gif";
	
	opdrachtenon 		= new Image();
	opdrachtenon.src 	= "img/btn_opdrachten_over.gif";
	opdrachtenoff 		= new Image();
	opdrachtenoff.src 	= "img/btn_opdrachten_off.gif";
	
	publicatieson 		= new Image();
	publicatieson.src 	= "img/btn_publicaties_over.gif";
	publicatiesoff 		= new Image();
	publicatiesoff.src 	= "img/btn_publicaties_off.gif";
	
	contacton 			= new Image();
	contacton.src 		= "img/btn_contact_over.gif";
	contactoff 			= new Image();
	contactoff.src 		= "img/btn_contact_off.gif";
	
	ervaringon 			= new Image();
	ervaringon.src 		= "img/btn_ervaring_over.gif";
	ervaringoff 		= new Image();
	ervaringoff.src 	= "img/btn_ervaring_off.gif";