function toNum( num )
{
  str = new String(num);

  if (str.indexOf( "," ) > 0)
  {
    new_str = str.split(',');
    res_str = new_str[0] + "." + new_str[1];
    return res_str;
  }
return num
}
function calc(){
	var potype=document.getElementById('potype');
	var posun=document.getElementById('posun');
	var poarea=document.getElementById('poarea');
	var pocel=document.getElementById('pocel');
	var popep=document.getElementById('popep');
	var pocomp=document.getElementById('pocomp');
	
  S = toNum(poarea.value);
  H = toNum(pocel.value);
  G = toNum(posun.value);
  T = toNum(pocomp.value );
  P = toNum(popep.value );
  
  document.getElementById('total').value = (Math.ceil( ((G/1000)*S*H+T*0.3+P*0.1)*10)/10)*1000;
  document.getElementById('f11').submit()
}