if(location.href.indexOf('&l=f')>0)placeholder='Chiffres des ballons & opt. remarques';
else if(location.href.indexOf('&l=e')>0)placeholder='Digits for balloons & opt. remarks';
else placeholder='Ziffern für Ballons & opt. Bemerkungen';

function zahbalset() {
document.form1.prerem.required=true;
document.form1.prerem.placeholder=placeholder;
}
setTimeout("if(location.href.indexOf('order')>0 && document.form1)zahbalset()",1111);