function changeImage (imgName, imgSrc) {
	document.getElementById(imgName).src=imgSrc;
}

function winOpen(url, wName, w, h, scroll) {
	F1 = window.open(url,wName,'width=' + w + ',height=' + h + ',scrollbars=' + scroll + ', resizable=no,location=no,menubar=no,status=no');
	F1.focus();
}

function wStatus(text) {
	window.status = text;
	return true;
}

function checkForm(elementID) {
	
	for (var i = 1; i <= elementID; i++) {
		if(document.getElementById(i).value == '') {
			alert ('Bitte fuellen sie das markierte Feld aus!');
			document.getElementById(i).focus();
			document.getElementById(i).style.border='2px solid red';
			window.scrollTo(0,0);
			return false;
		}
	}
	
}