// MwSt-Satz und allgemeine Funktionen

var vmwst = 0.19; // default MwSt-Satz

function farbe()
{ var x=screen.width/2-310;
  var y=screen.height/2-290;
  var f = window.open('farbe.htm', 'Farbauswahl', 'width=620,height=580,resizable=no,left='+x+',top='+y);
  f.focus();
}

function zubehoer()
{ var x=screen.width/2-375;
  var y=screen.height/2-275;
  var zub = window.open('zubehoer.htm','Zubehoer','width=750,height=550,resizable=no,menu=no,left='+x+',top='+y);
  zub.focus();
}

function Runden2(x)
{ x = Math.round(x * 100) / 100;
  var y = String(x);
  var pp = y.search(/\./);
  if (pp == -1)
  {  x = x + '.00'; }
  else
  {  if ((y.length - pp) == 2) x = x + '0'; }
  return x;
}

function val_check(wert)
{ if (wert=="") return 0;
  if (isNaN(wert)) return 0;
  if (wert<0) return 0;
  return Math.floor(wert);
}

function flaeche(i)
{ var x=screen.width/2-190;
  var y=screen.height/2-125;
  var f = window.open('flaeche.htm?'+i, 'Flaeche', 'width=380,height=250,resizable=no,left='+x+',top='+y);
  f.focus();
}

function flaechenberechnung()
{ var x=screen.width/2-405;
  var y=screen.height/2-435;
  var f = window.open('flaechenberechnung.htm', 'Flaeche', 'width=810,height=875,resizable=no,scrollbars=yes,left='+x+',top='+y);
  f.focus();
}

function menu0()
{ if (document.getElementById('produkte').style.display == '')
  { document.getElementById('produkte').style.display = 'none'; } else { document.getElementById('produkte').style.display = ''; }
}

function menu1()
{ if (document.getElementById('prospekte').style.display == '')
  { document.getElementById('prospekte').style.display = 'none'; } else { document.getElementById('prospekte').style.display = ''; }
}