function openHelpPopup(helpTekst_id,w,h)
{

    var width = (w==null) ? 200 : w;
    var height = (h==null) ? 250 : h;
    var scrollbars = (height>550) ? "yes" : "no";
    
    openWin('helppopup.aspx?id='+helpTekst_id,width,height,scrollbars,"no");
}

function openPrintPage(url)
{
    if (url==null)
    {
        var urlArr = location.href.split('/');
        var argSep = location.href.indexOf('?')>-1 ? "&" : "?";
        url =  location.href + ((urlArr[urlArr.length-1]=="")?"default.aspx":"") + argSep +  "printer=1";
    }
        
    openWin(url,700,500,"yes","yes");
    
}

function openWin(url, w, h, scrollbars, resizable)
{
	var x = 0;
	var y = 0;

	//breedte en plaats bepalen
	if (  screen.width <=  w )
		//breedte past niet op scherm
		w =  screen.width - 100;
	else
		//breedte past wel
		x = ( screen.width - w ) / 2;
	
	//hoogte bepalen
	if (  screen.height <=  h )
		//breedte past niet op scherm
		h =  screen.height - 100;
	else
		//preview breedte past wel
		y = ( screen.height - h ) / 2;
	
	var opties = "width=" + w + ", height=" + h + ",scrollbars=" + scrollbars + ",resizable=| + resizable + |, left="+x+",top="+y+"";
	var popup = window.open(url , "popup", opties);
	popup.focus();
}

var currentObj;
function swapMenuImage(obj, state) 
{
    var regexp = /\.gif$/gi;
    var regexp2 = /_o\.gif$/gi;
    if (state != '') 
    { 
        if (state == 2) 
        { 
            var loc = obj.src; 
            var newloc = loc.replace(regexp, '_o.gif'); 
            obj.src = newloc; 
        }
        else if (state == 1) 
        { 
            var loc = obj.src; 
            var newloc = loc.replace(regexp2, '.gif'); 
            obj.src = newloc; 
        }
        if (currentObj != null) 
        { 
            var loc = currentObj.src; 
            var newloc = loc.replace(regexp2, '.gif'); 
            currentObj.src = newloc; 
        }
    }
}