function CreateUrlConds (prefix, conds_array) {
    url= '?';
    for (i=0; i<conds_array.length;i++){
      url += prefix + '-' + (i+1) + 'c=' + conds_array[i][0] + '&';
      url += prefix + '-' + (i+1) + 'w=' + conds_array[i][1] + '&';
      url += prefix + '-' + (i+1) + '1=' + conds_array[i][2] + '&';
      if (typeof(conds_array[i][3]) != "undefined")
        url += prefix + '-' + (i+1) + '2=' + conds_array[i][3] + '&';
    }
    return url;
  }


   
  function MakeFiltr(form_name, CondsArray) {
    if (typeof(CondsArray) == "undefined")
      CondsArray = [];

    if ((document.forms[form_name]['s-11'].value) != "") {
      CondArray = [];
      CondArray[0] = 'p';
      CondArray[1] = '==';
      CondArray[2] = document.forms[form_name]['s-11'].value;
      CondsArray[CondsArray.length] = CondArray;
    }

   if ((document.forms[form_name]['s-21'].value)>0 && (document.forms[form_name]['s-31'].value)>0) {
      CondArray = [];
      CondArray[0] = 'cenab';
      CondArray[1] = '<=*<=';
      CondArray[2] = document.forms[form_name]['s-21'].value;
      CondArray[3] = document.forms[form_name]['s-31'].value;
      CondsArray[CondsArray.length] = CondArray;
   } else {
     if ((document.forms[form_name]['s-21'].value)>0) {
        CondArray = [];
        CondArray[0] = 'cenab';
        CondArray[1] = '>=';
        CondArray[2] = document.forms[form_name]['s-21'].value;
        CondsArray[CondsArray.length] = CondArray;
     }
     if ((document.forms[form_name]['s-31'].value)>0) {
        CondArray = [];
        CondArray[0] = 'cenab';
        CondArray[1] = '<=';
        CondArray[2] = document.forms[form_name]['s-31'].value;
        CondsArray[CondsArray.length] = CondArray;
     }



   }


//    window.location = CreateUrlConds('s', CondsArray);
    file = CreateUrlConds('s', CondsArray);
    window.open(file, "porównanie", "resizable=yes", "scrollbar=yes", "status=yes", "dependent=yes" ) 
  }



  function DoCompare(tlinia) {
    var e;
    var err = [];

    if (article_id.length < 2)  
	  err[err.length] = "Musisz zaznaczyć co najmniej 2 produkty do porównania."; 

    if (article_id.length > 10)  
	  err[err.length] = "Możesz zaznaczyc maksymalnie 10 produktów do porównania."; 
    
	if (err.length) {
      msg = '';
      for (e=0; e<err.length; e++) {
        n=e+1;
        msg += n + '. ' + err[e];
      }
      alert(msg);
    } else {
      url = "porownaj.php?";
      for (i=0; i<article_id.length;i++){
        url += "art_id" + article_id[i] + "=y&";
      }

      if (tlinia == true)
        url += 'tlinia=on';

//      window.location = url;

    window.open(url, "porównanie", "dependent,width=800,height=400,left=50,top=50,scrollbars=yes,resizable=yes" ) 

    }
  }
  
  function toCompare(articleID){
    article_id[article_id.length++] = articleID;
  }

  function deleteCompare(articleID){
    start = getIndex(articleID, article_id);
    article_id.splice(start,1);
  }

  function getIndex(value, array){
    for(i=0;i<array.length;i++){
        if(array[i] == value) return i;
    }
  }