<!-- Original: Dr.-Ing. Alex Ströber-->
<!-- Web Site: http://www.statikweb.de -->
<!-- Begin
function a_times_b(form) {
var g=9.81;
var cx=0.80;
var cy=0.50;
mue=eval(form.glbeiw.options[form.glbeiw.options.selectedIndex].value);
al=eval(form.al.options[form.al.options.selectedIndex].value);
al=al/180*Math.PI;
bex=eval(form.be.options[form.be.options.selectedIndex].value);
bey=90-bex
bex=bex/180*Math.PI;
bey=bey/180*Math.PI;
m=eval(form.m.value.replace(',','.'));
c=Math.max(
  (m*cx*g-mue*m*g)/(2.0*(Math.cos(al)*Math.cos(bex)+mue*Math.sin(al))),
  (m*cy*g-mue*m*g)/(2.0*(Math.cos(al)*Math.cos(bey)+mue*Math.sin(al))));
c=Math.round(c*100)/100.0;
form.ans.value=c;
}
// End -->