window.onload= setscreen;
window.onresize= setscreen;
swfwidth = 1198;
swfheight = 719;

// zet lagen uit bij lage resolutie
function setscreen() {
	var mainContainer = document.getElementById('mainContainer');
	var html = document.getElementsByTagName('html')[0];
	
	if (window.innerWidth) {
		screenwidth = window.innerWidth;
		screenheight = window.innerHeight;
	} else {
		screenwidth = document.body.clientWidth;
		screenheight =document.body.clientHeight;
	}
	
	// zet breedte
	var marginLeft = Math.round((screenwidth-swfwidth)/2);
	if (marginLeft < -130) {
		marginLeft = -130;
	}
	mainContainer.style.marginLeft = marginLeft + 'px';

	// zet hoogte
	var marginTop = Math.round((screenheight-swfheight)/2);
	if (marginTop > 0) {
		marginTop = 0;
	} else if (marginTop < -38) {
		marginTop = -38;
	} 
	mainContainer.style.marginTop = marginTop + 'px';
	
}