sfHover = function() {
var sfEls = document.getElementById("menu").getElementsByTagName("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" ie_does_hover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp(" ie_does_hover\\b"), "");
}
}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

function nextImage() {
	if ((show_image + 1) == (refImgArray.length-1)) {
		document.getElementById("td_next").innerHTML = '';
	}
	
	if (show_image < (refImgArray.length - 1)) {
		show_image = show_image + 1;
		document.getElementById("refpic").src = 'images/referenties/'+refImgArray[show_image];
		document.getElementById("reftxt").innerHTML = '<span class="text-bold-11px-red">' + refTxtArray[show_image] + '</span>';
	}
	

	
	if ((show_image + 1) > 0) {
		document.getElementById("td_prev").innerHTML = "<a href=#prev><img src='images/ref_prev.gif' border='0' id='ref_next' title='Vorige referentie' onClick='prevImage();'></a>";
	}
	
}
			
function prevImage() {
	if (show_image > 0) {
		show_image = show_image - 1;
		document.getElementById("refpic").src = 'images/referenties/'+refImgArray[show_image];
		document.getElementById("reftxt").innerHTML = '<span class="text-bold-11px-red">' + refTxtArray[show_image] + '</span>';
		if ((show_image) == 0) {
			document.getElementById("td_prev").innerHTML = "";
		}
	}
	
	if (show_image < (refImgArray.length - 1)) {
		document.getElementById("td_next").innerHTML = "<a href=#next><img src='images/ref_next.gif' border='0' id='ref_next' title='Volgende referentie' onClick='nextImage();'></a>";
	}
}

function DisplayUtopis(page)
{
	document.getElementById('menu-table').style.display = 'none';
	document.getElementById('utopis-table').style.display = 'block';
	document.getElementById('iframe_utopis_content').src='http://www.utopis.net/troelstra2008_nl/utopis.asp?prod='+page+'&rubr=01';
}

function DisplaySubsites(page)
{
	document.getElementById('menu-table').style.display = 'block';
	document.getElementById('utopis-table').style.display = 'none';
	document.getElementById('iframe_content').src='page.asp?name='+page;
}

function openPopCenter(p_width, p_height, p_name, p_url, p_scroll) {
	var pos_y = (screen.width - p_width) / 2;
	var pos_x = (screen.height - p_height) / 2;
	win_popup = 'width='+p_width+',height='+p_height+',left='+pos_y+',top='+pos_x+',menubar=0,location=0,toolbar=0,personalbar=0,status=0,scrollbars='+p_scroll+',titlebar=0'
	win = window.open(p_url, p_name, win_popup)
}

function openBestek(url) {
	openPopCenter(700, 600, "p_bestek_tedv", url, 0);
}

function openIFrame(page)
{
document.getElementById('iframe_content').src=page;
}