window.onresize = setScreen;

function setScreen(){
	vDivMenu = document.getElementById('menu');
	vDivHead = document.getElementById('head');
	vDivContent = document.getElementById('content');
	vDivBottom = document.getElementById('bottom');
	
	/* alles klein maken om eventuele scrollbars te laten verdwijnen */
	vDivMenu.style.height = '20px';
	
	vDivHead.style.width = '20px';
	
	vDivContent.style.width = '20px';
	vDivContent.style.height = '20px';
	
	vDivBottom.style.width = '20px';
	
	/* hoogte body opmeten */
	vWidth = document.getElementById('body').clientWidth;
	vHeight = document.getElementById('body').clientHeight;
	
	/* alle div'jes de juist breedte/hoogte meegeven */
	vDivMenu.style.height = (vHeight - 299) +'px';
	
	vDivHead.style.width = (vWidth - 300) +'px';
	
	vDivContent.style.width = (vWidth - 300) +'px';
	vDivContent.style.height = (vHeight - 170 - 50) +'px';
	
	vDivBottom.style.width = (vWidth - 300) +'px';
}
function onButton(vId, vAction){
	vButton = document.getElementById('button'+ vId);
	if(vAction == 'on'){
		vButton.style.display = '';	
	}
	else{
		vButton.style.display = 'none';
	}
}