function swapMod(mod) {
	document.getElementById("mod1").style.display='none';
	document.getElementById("mod2").style.display='none';
	document.getElementById("mod3").style.display='none';
	document.getElementById("mod" + mod).style.display='block';
}

function swapdiv(div) {
	document.getElementById("content1").style.display='none';
	document.getElementById("content2").style.display='none';
	document.getElementById("content3").style.display='none';
	document.getElementById(div).style.display='';
}

function swapFieldset(fieldset) {
	document.getElementById("firmal").style.display='none';
	document.getElementById("kontakt").style.display='none';
	document.getElementById("bankl").style.display='none';
	document.getElementById("login").style.display='none';
	
	document.getElementById(fieldset).style.display='';
}

function checkedall() {
	var stat;
	for (var i = 1; i < document.forms[1].elements.length; i++) {
	    	document.forms[1].elements[i].checked = true;
	}
	document.getElementById('checkalldiv').innerHTML = '<input type="checkbox" name="checkall" onclick="decheckedall()" id="checkall" checked="checked" />';
}

function decheckedall() {
	var stat;
	for (var i = 1; i < document.forms[1].elements.length; i++) {
	    	document.forms[1].elements[i].checked = false;
	}
	document.getElementById('checkalldiv').innerHTML = '<input type="checkbox" name="checkall" onclick="checkedall()" id="checkall" />';
}

function getTopWindow()
{
  var parentView = document.parentWindow?document.parentWindow:document.defaultView;
  return parentView.parent;
}

function runde(x, n) {
	  if (n < 1 || n > 14) return false;
	  var e = Math.pow(10, n);
	  var k = (Math.round(x * e) / e).toString();
	  if (k.indexOf('.') == -1) k += '.';
	  k += e.toString().substring(1);
	  return k.substring(0, k.indexOf('.') + n+1);
	}


function insertArt(line, artikel, preis) {
	self.parent.document.getElementById('leist' + line).value=artikel;
	self.parent.document.getElementById('ep' + line).value=preis;
	self.parent.document.getElementById('anz' + line).focus();
	self.parent.tb_remove();
}

function calc(line) {
	var anz = document.getElementById('anz' + line).value*1;
	var ep = document.getElementById('ep' + line).value*1;
	var netto;
	document.getElementById('gp' + line).value= anz * ep;
	//for (var i = 0; i < 8; i++) {
    //	netto = netto + (document.getElementById('gp' + i).value*1);
	//}
	
	var gp0 = document.getElementById('gp0').value*1;
	var gp1 = document.getElementById('gp1').value*1;
	var gp2 = document.getElementById('gp2').value*1;
	var gp3 = document.getElementById('gp3').value*1;
	var gp4 = document.getElementById('gp4').value*1;
	var gp5 = document.getElementById('gp5').value*1;
	var gp6 = document.getElementById('gp6').value*1;
	var gp7 = document.getElementById('gp7').value*1;
	var gp8 = document.getElementById('gp8').value*1;
	
	netto=gp0+gp1+gp2+gp3+gp4+gp5+gp6+gp7+gp8;
	steuer=netto/100*19;
	brutto=netto+steuer;
	
	document.getElementById('netto').value=netto;
	document.getElementById('steuer').value=runde(steuer,2);
	document.getElementById('brutto').value=runde(brutto,2);
}