var LayoutHeight	= 174;
var GradientPos		= 0; 
var GradientHeight	= 250; 
var GradientDir		= 0;
var LayoutFps		= 30; 
/*
	Hoi Bart, hoe gaat het met je laptop morgen weer pvb ? 
*/

function LayoutTick ()
{
	if (GradientDir == 0) {
	
		if (GradientPos < (GradientHeight-LayoutHeight)) {
			GradientPos += 1; 
			document.getElementById('maintopgradient').style.top = '-'+GradientPos.toString()+'px';
		} else GradientDir = 1; 
	
	} else {
	
		if (GradientPos > 0) {
			GradientPos -= 1; 
			document.getElementById('maintopgradient').style.top = '-'+GradientPos.toString()+'px';
		} else GradientDir = 0; 
	
	}
	setTimeout ('LayoutTick()',1000/LayoutFps); 
}