var prices=new Array();
var base="";
var separator=" ";

function changeprice(obj){
  var vals=document.getElementsByTagName('VAR');
  var vnum=vals.length;
  if (prices.length==0){
    for (i=0; i<vnum; i++){
      tmp=vals[i].innerHTML.toUpperCase().split(separator);
      prices[i]=tmp[0];
    }
    base=tmp[1];
  }
  
  for (i=0; i<obj.options.length; i++){
    if (obj.options[i].innerHTML==base) vesz=obj.options[i].value.split("|")[1];
  }

  ovs=obj.value.split("|"); 
  
  for (i=0; i<vnum; i++){
    if (obj.options[obj.selectedIndex].innerHTML==base) vals[i].innerHTML=prices[i]+separator+obj.options[obj.selectedIndex].innerHTML;
    else vals[i].innerHTML=Math.ceil(prices[i]*vesz/ovs[0])+separator+obj.options[obj.selectedIndex].innerHTML;
  }
}

function calc(){
  var cmit=document.getElementById('mit').value;
  var cmirol=document.getElementById('mirol').value.split('|');
  var cmire=document.getElementById('mire').value.split('|');
  var eredm=cmit*cmirol[1]/cmire[0];
  if (cmirol[0]==cmire[0]) eredm=cmit;
  var val=String(eredm).split(".");
  if (val[1]) eredm=val[0]+"."+val[1].slice(0,3);
  else eredm=val[0];
  document.getElementById('eredm').value=eredm;
}