function changeStyle(id, file) {
		document.getElementById(id).src = file;
}

// om deze functie te gebruiken moet u in de form dat u gebruikt de divblok die bij een element behoort dezelfde naam geven maar met "chk" ervoor

function checkform(form,boodschap){	
	waarde = 1;
	for(i=0;i<form.length;i++){
			div = "chk" + form.elements[i].name;
			divexist = document.getElementById(div);
			if(divexist != null){
				if(form.elements[i].value == ""){
							//document.getElementById(div).style.fontWeight = "bold";
							document.getElementById(div).style.color = "red";
							form.elements[i].style.borderColor = 'red';
							waarde = 0;
				}else{
							//document.getElementById(div).style.fontWeight = "";
							document.getElementById(div).style.color = "";
							form.elements[i].style.borderColor = '';
				}
			}							
	}
	if(waarde==0){
		event.returnValue = false;
		alert(boodschap);
	}
}

function bevestigDelete(vraag, url) {
	var antwoord = confirm(vraag);
	if(antwoord) {
		location.href = url;
	}
}

function openDialog(url, width, height) {
	window.open(url, "dialog", "width=" + width +", height=" + height +", location=0, menubar=0, resizable=0, scrollbars=0, status=0, titlebar=0, toolbar=0");	
}

function wisselControl(obj1, obj2) {
	if(eval("document.getElementById('" + obj1 + "').style.display") == "block") {
		eval("document.getElementById('" + obj1 + "').style.display= 'none'");
	} else {
		eval("document.getElementById('" + obj1 + "').style.display= 'block'");
	}
	if(eval("document.getElementById('" + obj2 + "').style.display") == "block") {
		eval("document.getElementById('" + obj2 + "').style.display= 'none'");
	} else {
		eval("document.getElementById('" + obj2 + "').style.display= 'block'");
	}
}

function wisSelectie(naam) {
	eval(naam + ".value = ''");
}

function noSpam(user, domain, subject){
	locationstring = "mailto:" + user + "@" + domain + "?subject=" + subject;
	window.location = locationstring;
}


function extern() { 
	if (!document.getElementsByTagName) return;

	var links = document.getElementsByTagName("a");
	for (var i=0; i < links.length; i++) {
		var link = links[i];
		if (link.getAttribute("href") && link.getAttribute("rel") == "extern") {
			link.target="_blank";
		}
	}
}

//window.onload = extern;

    function checkNrChars() {
        if(document.getElementById('search_q').value.length < 2) {
			alert('Gelieve minstens 2 karakters op te geven.');
				return false;
		} else {
				return true; 
		}
    }