function changeNavBg(n) {
	if(document.getElementById(n).style.backgroundPosition == '0px 50%')
		document.getElementById(n).style.backgroundPosition = '-145px';
	else
		document.getElementById(n).style.backgroundPosition = '0px';
}
if(window.event + "" == "undefined") event = null;
function HM_f_PopUp(){return false};
function HM_f_PopDown(){return false};

function openWindow(companyId){
	var source = '/beoordelingen.php?compId='+companyId;
	width = 650
	height = 550
	xl = (screen.availWidth/2)-(width/2)
	tt = (screen.availHeight/2)-(height/2)
	picture=window.open(source,'Aanbieder','toolbar=no,scrolling=auto,resizable=no,location=no,directories=no,status=no,scrollbars=yes,menubar=no,width='+width+',height='+height+',left='+xl+',top='+tt);
	picture.focus()
}