function getElementsByClass(searchClass, node, tag)
{
	var classElements = new Array();
	if ( node == null ) node = document;
	if ( tag == null ) tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++)
	{
		if ( pattern.test(els[i].className) )
		{
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function check(formName)
{
	var req = getElementsByClass('required', formName.form);
	var err = new Array();

	for( var i=0; i < req.length; i++)
	{
		var value = document.getElementById(req[i].htmlFor).value;
		if( value == null || value == '' )
		{
			err.push(req[i].htmlFor);
		}
	}
	
	if( err.length > 0 )
	{
		var txt = 'Please fill in the following fields:' + "\n-" + err.join("\n-");
		alert( txt );
		return false;
	}
	else
	{
		formName.form.submit();
		return true;
	}
}

function newline() {
        var total = document.getElementById("newline-wrapper").getElementsByTagName("table").length;

        total++;

        // Clone the first div in the series
        var tbl = document.getElementById("newline-wrapper").getElementsByTagName("table")[0].cloneNode(true);

        // DOM inject the wrapper div
        document.getElementById("newline-wrapper").appendChild(tbl);

        var buts = tbl.getElementsByTagName("button");
        if(buts.length) {
                buts[0].parentNode.removeChild(buts[0]);
                buts = null;
        }

        // Reset the cloned label's "for" attributes
        var labels = tbl.getElementsByTagName('label');

        for(var i = 0, lbl; lbl = labels[i]; i++) {
                // Set the new labels "for" attribute
                if(lbl["htmlFor"]) {
                        lbl["htmlFor"] = lbl["htmlFor"].replace(/[0-9]+/g, total);
                } else if(lbl.getAttribute("for")) {
                        lbl.setAttribute("for", lbl.getAttribute("for").replace(/[0-9]+/, total));
                }
        }

        // Reset the input's name and id attributes
        var inputs = tbl.getElementsByTagName('input');
        for(var i = 0, inp; inp = inputs[i]; i++) {
                // Set the new input's id and name attribute
                inp.id = inp.name = inp.id.replace(/[0-9]+/g, total);
                if(inp.type == "text") inp.value = "";
        }

        // Call the create method to create and associate a new date-picker widgit with the new input
        datePickerController.create();

        // No more than 5 inputs
        if(total == 5) document.getElementById("newline").style.display = "none";

        // Stop the event
        return false;
}

function createNewLineButton() {
        var nlw = document.getElementById("newline-wrapper");

        var a = document.createElement("a");
        a.href="#";
        a.id = "newline";
        a.title = "Create New Input";
        a.onclick = newline;
        //nlw.parentNode.appendChild(a); HEEFT GEEN FUNCTIE  

        a.appendChild(document.createTextNode("+"));
        a = null;
}