dateiendungen = new Array();
dateiendungen[0]='png';
dateiendungen[1]='gif';
dateiendungen[2]='jpg';
dateiendungen[3]='jpeg';

function ChecknShowShortFile(index) {
	var upload_text = "upload_ShortFile_"+index;
	var upload_file = "localfile_"+index;
	var path, file, extension;

	path = document.getElementById(upload_file).value;
	file = path.slice((path.lastIndexOf("/") + 1));
	extension = file.slice((file.lastIndexOf(".") + 1));

	if (inArray(dateiendungen, extension.toLowerCase())) {
		document.getElementById(upload_text).innerHTML="<font style='color: green;'>"+file+"</font>";
	} else {
		document.getElementById(upload_text).innerHTML="<font style='color: red;'>! Nicht erlaubt: "+file+" ("+extension+") !</font>";
	}
}
function inArray(s_array, s_item) {
	for (i = 0; i < s_array.length; i++) {
		if (s_array[i] == s_item) {
			return true;
	}	}
	return false;
}