function pruefen()
{
if (!check_empty(document.getElementById("form").realname.value))
	return meld("Name required !");
if (!check_empty(document.getElementById("form").email.value))
	return meld("Email-Address required !");
if (!check_email(document.getElementById("form").email.value))
	return meld("Email-Adress is faulty !");
if (!check_empty(document.getElementById("form").address.value))
	return meld("Address required !");
if (!check_empty(document.getElementById("form").city.value))
	return meld("City required !");
if (!check_empty(document.getElementById("form").country.value))
	return meld("Country required !");
return true;
}

function meld(text)
{
alert("Your order can not be submitted.\nHere is the reason why :\n\n"+text);
return false;
}

function check_empty(text)
{
return(text.length>0);
}

function check_email(a)
{
if ((a.indexOf('@')==-1)||(a.indexOf('.')==-1)) return false;
return true;
}

function schreib_datum()
{
var day = new Object();
var mon = new Object();
date=new Date();
day[0]="Sunday";
day[1]="Monday";
day[2]="Tuesday";
day[3]="Wednesday";
day[4]="Thursday";
day[5]="Friday";
day[6]="Saturday";
mon[0]="January";
mon[1]="February";
mon[2]="March";
mon[3]="April";
mon[4]="May";
mon[5]="June";
mon[6]="July";
mon[7]="August";
mon[8]="September";
mon[9]="October";
mon[10]="November";
mon[11]="December";
jahr=date.getYear();
if (jahr<1000) jahr+=1900;
document.write('<br /><table width="610"><tr><td>Date: '+day[date.getDay()]+", "+mon[date.getMonth()]+" "+date.getDate()+". "+" "+jahr+'</td></tr></table>');
}