function tr(obj){
s=obj.value;
re=/^\s+/;s=s.replace(re, '');
re=/\s+$/;s=s.replace(re, '');
obj.value=s;return s;
}
function techHelp()
{
width=780;height=500;
if (parseInt (navigator.appVersion) >= 4 ) {
X=(screen.width  - width )/2;
Y=(screen.height - height)/2;
}
var extra='width='+width+',height='+height+',top='+Y+',left='+X+',resizable=0,scrollbars=1,location=no,directories=no,status=no,menubar=no,toolbar=no';
window.open('/gertrudas/index.html','dhelp',extra);
}