function info(breite,hoehe,datei,fenstername,scrollbars) {
	var mittehorizontal=(screen.width-breite)/2;
	var mittevertikal=(screen.height-hoehe)/2;
	var eigenschaften="width="+breite+",height="+hoehe+",left="+mittehorizontal+",top="+ mittevertikal+",menubar=no, resizable=yes, locationbar=no, statusbar=no, scrollbars="+scrollbars;
	window.open(datei,fenstername,eigenschaften);
}

function validatePwlost(myform) {
	msg = "";
	if(myform.email.value==""){
		msg += "Please enter your e-mail adress.\n";
	}else{
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myform.email.value)){
			//OK
		}else{
			msg += "Please enter your valid e-mail adress.\n";
		}
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}

function validateLogin(myform) {
	msg = "";
	if(myform.email.value==""){
		msg += "Please enter your e-mail adress.\n";
	}else{
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myform.email.value)){
			//OK
		}else{
			msg += "Please enter your valid e-mail adress.\n";
		}
	}
	if(myform.passwort.value==""){
		msg += "Please enter your password.\n";
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}

function validateUpload(myform) {
	msg = "";
	if(myform.titel.value==""){
		msg += "Please insert a title.\n";
	}
	if(myform.file.value==""){
		msg += "Please select a file for upload.\n";
	}
	if(msg!=""){
		alert(msg);
		return false;
	}
}

function confirmwindow(question, gotourl){
	if(confirm(question)){
		top.location.replace(gotourl);
	}
}