// JavaScript Document

function hilite1(id) {
	hi = document.getElementById(id);
	hi.style.visibility = 'visible';
}

function hilite2(id) {
	hi = document.getElementById(id);
	hi.style.visibility = 'hidden';
}

function incrementCart(){
  elem = document.getElementById('cart_items');
  var cart_items = elem.innerHTML;
  if(cart_items == ' ') cart_items = 0;
  cart_items++;
  elem.innerHTML = cart_items;
}

function cartAlert(elem){
  id = elem.id
  pr_elem = document.getElementById('pr_'+id)
  if(elem.value > 20) {
    text = 'Wenn Sie mehr als 20 Exemplare einer Broschüre bestellen möchten,\nsetzen Sie Sich bitte mit uns in Verbindung.'
    alert(text);
    elem.value = 1;
    pr_elem.value = '2.00' 
  } else{
    preis = 2*elem.value+'.00'
    pr_elem.value = 2*elem.value+'.00'
    anz_elems = document.cart_form['order.number:records']
    var anz_all = 0
    for(i=0;i<anz_elems.length;i++){
      anz_all += parseInt(anz_elems[i].value);
    }
    anzeige =  document.getElementById('cart_items');
    anzeige.innerHTML = anz_all
    var preis = 0.00
    pr_elems = document.cart_form['order.preis:records']
    for(i=0;i<pr_elems.length;i++){
      preis += parseFloat(pr_elems[i].value);
    }
    
    auth = document.cart_form.auth.value
    if(auth=='Ja'){
      if(preis > 20.0){
        preis -= 20.0
      } else {
        preis = 0;
      }
    }
    
    pr_feld = document.cart_form.summe;
    pr_feld.value = preis+'.00'
  }
}

function openWindow(adr,props) {
  fenster1 = window.open(adr, "popup", props);
  fenster1.focus();
}