//Afbeeldingen preloaden
if (document.images) {
 	knop1_on =new Image(); knop1_on.src ="images/design_hoover.gif"; 
 	knop1_off=new Image(); knop1_off.src="images/design.gif"; 
 	
	knop2_on =new Image(); knop2_on.src ="images/gaming_hoover.gif"; 
 	knop2_off=new Image(); knop2_off.src="images/gaming.gif"; 
}

//Als muis erop komt
function movr(k) {
	if (document.images)	{
		eval('document.knop'+k+'.src=knop'+k+'_on.src');
	}
}

//Als muis eraf gaat
function mout(k) {
	if (document.images)	{
		eval('document.knop'+k+'.src=knop'+k+'_off.src');
	}
}