function changeImg(theId, theSrc) {
	if (document.getElementById(theId)) {
		document.getElementById(theId).src = theSrc;
	}
}

function submit(theForm, theValue) {
	if (document.getElementById('curLang')) {
		langId = document.getElementById('curLang').value;
	}
	if (theForm == 'searchform') {
		sword = document.getElementById('searchField').value;
		if (sword.length > 2) {
			document.searchform.submit();
		}
		else {
			if (langId == 1) {
				alert('A search term has to have at least 3 characters.');
			}
			else {
				alert('Ein Suchwort muss aus mindestens 3 Buchstaben bestehen.');
			}
		}
	}
}