function imageOn(image)
{
        if (document.images)
        {
                imgOn = eval(image + "_on.src");
                document [image].src = imgOn;
        }
}

function imageOff(image)
{
        if (document.images && section != image)
        {
                imgOff = eval(image + "_off.src");
                document [image].src = imgOff;
        }
}       

function imageOffold(image)
{
        if (document.images && section != 'dummy')
        {
                imgOff = eval(image + "_off.src");
                document [image].src = imgOff;
        }
}

function imageOffoldsub(image)
{
        if (document.images && subsection != 'dummy')
        {
               imgOff = eval(image + "_off.src");
               document [image].src = imgOff;
        }
}



/* scripting nav pagina */

section="tarieven"
if(document.images){

wathelpdesk_on = new Image ();
wathelpdesk_on.src = '/images/wat_helpdesk_on.gif';
wathelpdesk_off = new Image ();
wathelpdesk_off.src = '/images/wat_helpdesk_off.gif';
	
voorwie_on = new Image ();
voorwie_on.src = '/images/voorwie_on.gif';
voorwie_off = new Image ();
voorwie_off.src = '/images/voorwie_off.gif';

tarieven_on = new Image ();
tarieven_on.src = '/images/tarieven_on.gif';
tarieven_off = new Image ();
tarieven_off.src = '/images/tarieven_off.gif';

steluwvraag_on = new Image ();
steluwvraag_on.src = '/images/steluwvraag_on.gif';
steluwvraag_off = new Image ();
steluwvraag_off.src = '/images/steluwvraag_off.gif';

beldirect_on = new Image ();
beldirect_on.src = '/images/beldirect_on.gif';
beldirect_off = new Image ();
beldirect_off.src = '/images/beldirect_off.gif';

faq_on = new Image ();
faq_on.src = '/images/faq_on.gif';
faq_off = new Image ();
faq_off.src = '/images/faq_off.gif';

voorbeeldvragen_on = new Image ();
voorbeeldvragen_on.src = '/images/voorbeeldvragen_on.gif';
voorbeeldvragen_off = new Image ();
voorbeeldvragen_off.src = '/images/voorbeeldvragen_off.gif';
}


		//ONMOUSEOVER MENU ITEMS
		function menu_on(button) {
			button.style.backgroundColor='#F7F7FC';
		}
		
		function menu_off(button) {
			button.style.backgroundColor='#ffffff';
		}




function goback(){
			browser = navigator.appName
			if (browser.indexOf("etscape") > 0 ) explorer = false
			else explorer = true
			
			if (explorer) {
				history.back()
			}	
			else {
				window.back()
			}
		}

		
		
/* dropdown functies */
var vlag = false

function show(it){
	if(document.all){
				document.all[it].style.visibility="visible";
		}

		else if(document.layers){
				document.layers[it].visibility="show";
		}

		else if (document.getElementById){
					document.getElementById(it).style.visibility="visible";
		}
}

function hide(it){
	if(vlag==false){
		if(document.all){
				document.all[it].style.visibility="hidden";
		}
		else if(document.layers){
				document.layers[it].visibility='hide';
		}
		else if (document.getElementById){
					document.getElementById(it).style.visibility='hidden';
		}
	}
}

function delayhide(it){
	iets = it 
	setTimeout("hide(iets)",1500)
}