<!--
function chkFormular()

{
var i=0; leer=false; felder="", date_1="";
with (document.Booking)
{
//Optionsgruppe pruefen Anfang
for (i=0;i<date.length;i++)
{
if (date[i].checked) date_1=date[i].value;
} 
if (date_1=="")
{
leer = true;

}

}

if(leer)
{
alert("Please choose a date!");
return false;
}
else return true;
}
//-->