function showFiles() {	
	var captcha = trim(document.getElementById('captcha').value);
  
	if( captcha == "" ) {
		showWarning('Es wurde keine Sicherheitscode eingetragen.');  
		return;  
	} else if( !captcha.match(/^([a-zA-Z0-9]{6,6})$/) ) {
		showWarning('Sicherheitscode war nicht korrekt.');
		return;  
	}
	document.getElementById('image_name').value = document.getElementById('captcha_image').src;
	var form = document.getElementById('registerForm');
	form.submit();
}

var done  = new Image();
done.src  = 'images/done.png';

function changeBackgroundColor(mouseover, mouseout, mouseclick, id) {
	if (mouseover) {
		if (document.getElementById('file-'+id).bgColor == '#ceffce') {
			document.getElementById('file-'+id).bgColor = '#e8e8e9';
		} else {
			document.getElementById('file-'+id).bgColor = '#e8e8e8';
			document.getElementById('view-'+id).style.visibility = "visible";
		}
	
	}
	
	if (mouseout) {
		if (document.getElementById('file-'+id).bgColor == '#e8e8e9' || document.getElementById('file-'+id).bgColor == '#ceffce') {
			document.getElementById('file-'+id).bgColor = '#ceffce';			
		} else {
			document.getElementById('file-'+id).bgColor = '#ffffff';
			document.getElementById('view-'+id).style.visibility = "hidden";
		}
	}
	
	if (mouseclick) {
		document.getElementById('file-'+id).bgColor = '#ceffce';
		document.getElementById('view-'+id).src     = done.src;
	} 
}

function getFile( file ) {	
	window.open('frame.php?' + file, "Download_File", "width=1100,height=700,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no");
}