// external

function button_mover(button) {
	button.style.color='#ffffff'; 
	button.style.backgroundColor='#000000';
}

function button_mout(button) {
	button.style.color='#ffffff';
	button.style.backgroundColor='#356AA0';
}

function addFormEvent(func) {
	if (!document.getElementById | !document.getElementsByTagName) {
		return;
	}
	var oldonload=window.onload;
	if (typeof window.onload != 'function') {
		window.onload=func;
	} else {
    		window.onload=function() {oldonload();func()}
	}
}



function externalLinks() { 
	if (!document.getElementsByTagName) {
		return;
	}
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") {
			anchor.target = "_blank";
		}
	}
} 

function formcheck(form) {
	if (!document.getElementsByTagName) {
		return;
	}
	var inputs = document.getElementsByTagName("input");
	for (var i=0; i<inputs.length; i++) {
		var input = inputs[i];
		if (input.getAttribute("alt")) {
			var field = 'taf-'+input.getAttribute("name");
			if (document.getElementById(field).value == '') {
				document.getElementById(field).focus();
				alert('U bent vergeten '+input.getAttribute("alt")+' in te vullen');
				return false;
			}
		}
	}
	return true;
}

function cal_open(field) {
	window.open('../js/calendar.php?field='+field, 'calendar','width=260,height=255,location=no,status=yes,menubar=no,directories=no,toolbar=no,resizable=no,scrollbars=no');
	return false;
}

function set_cal(field,value) {
	document.getElementById(field).value = value;
}

addFormEvent(externalLinks);