var SEP = '$$'; 
var WEB_SEP = '$'; 


function deleteOption(object,index) {
    object.options[index] = null;
}

function addOption(object,text,value, flagselected) {
    var defaultSelected = false;
    var selected = false;
    var optionName = new Option(text, value, defaultSelected, selected)
    object.options[object.length] = optionName;
    object.options[object.length-1].selected =flagselected;
    
}
function clearOptions (what)
{
 for (var i=what.options.length-1;i>-1;i--)
        deleteOption(what,i);
}
function compareText (option1, option2) {
  return option1.text < option2.text ? -1 :
    option1.text > option2.text ? 1 : 0;
}
function compareValue (option1, option2) {
  return option1.value < option2.value ? -1 :
    option1.value > option2.value ? 1 : 0;
}
function compareTextAsFloat (option1, option2) {
  var value1 = parseFloat(option1.text);
  var value2 = parseFloat(option2.text);
  return value1 < value2 ? -1 :
    value1 > value2 ? 1 : 0;
}
function compareValueAsFloat (option1, option2) {
  var value1 = parseFloat(option1.value);
  var value2 = parseFloat(option2.value);
  return value1 < value2 ? -1 :
    value1 > value2 ? 1 : 0;
}

function compareTextAsFloatDesc (option1, option2) {
  var value1 = parseFloat(option1.value);
  var value2 = parseFloat(option2.value);
  return value1 > value2 ? -1 :
    value1 < value2 ? 1 : 0;
}
function sortSelect (select, compareFunction) {
  if (!compareFunction)
    compareFunction = compareText;
  var options = new Array (select.options.length);
  for (var i = 0; i < options.length; i++)
    options[i] = 
      new Option (
        select.options[i].text,
        select.options[i].value,
        select.options[i].defaultSelected,
        select.options[i].selected
      );
  options.sort(compareFunction);
  select.options.length = 0;
  for (var i = 0; i <= options.length; i++) {
	//alert('loop' + i);
	if (options[i] != null ) {
		select.options[i] = options[i];
	}
	}
}

function middleString(fullString, startString, endString) {
   if (fullString.indexOf(startString) == -1) {
      return "";
   } else {
      var sub = fullString.substring(fullString.indexOf(startString)+startString.length, fullString.length);
           if (sub.indexOf(endString) == -1) {
         return sub;
      } else {
         return (sub.substring(0, sub.indexOf(endString)));
      }
   }
}

function refreshTrail()
{

   var divcriteria = document.getElementById ( "searchcriteria");
   
text = '<div class="trailer">' ;
text += '&#160;<a href="javascript:downloadHome()">' + topmsg +  "</a>&#160;&#187;";
 for ( i=0 ; i < arrchoices.length ; i++ )
   {
     text += '&#160;<a href="javascript:previousCateg('+  i + ')">' + arrchoices[i]+ "</a>&#160;&#187;";
   }
text += "</div>";
text += '<div class="toto1" align="left">';
text += '&#160;<select name="download_search_categ" class="select_down" id="download_search_categ" onchange="nextCateg () ;"></select>'; 
text +='&#160;<input type="button" name="launchbut" value="Launch" class="launch" onclick="dosearch();" />'; 
text += "</div>";

  divcriteria.innerHTML= text;


}

// This function is called as far as the javascript that contains the categories is loaded
function initSearchCateg()
{
    while ( loadedjs ==false)    { setTimeout("initSearchCateg();" , 100);}
   firstcateg="";   
   arrchoices = new Array();
    refreshTrail ();     
   refreshCategOptions ();     
  
   toggle('pleasewait') ;
   toggle('searchtool') ; 
}
function toggle(id) {
    var element = document.getElementById(id);
   // alert ("" + id + " --> " + document);
    with (element.style) {
        if ( display == "none" ){
            display = ""
        } else{
            display = "none"
        }
    }
}    


function previousCateg ( pos ) 
{
	toggle('pleasewait') ;
	 toggle('searchtool') ; 
	// firstcateg=arrchoices[arrchoices.length-1] ;
	while ( arrchoices.length > pos )
	{
	  arrchoices.pop();
	  }
	 refreshTrail ();     
	 refreshCategOptions (); 
       
       toggle('searchtool') ; 
	 toggle('pleasewait') ;
	 
	
}

function nextCateg () 
{

	toggle('pleasewait') ;
	toggle('searchtool') ; 

	 field_select_categ = document.getElementById('download_search_categ');
    for (var i=field_select_categ.options.length-1;i>-1;i--)
    {
        if (field_select_categ.options[i].selected)
        {
            if ( field_select_categ.options[i].value != "$ALL$" )
            {
           	//	firstcateg= field_select_categ.options[i].value + SEP;
		        arrchoices.push(field_select_categ.options[i].value);
        	  }

           break;
        }
    }
    
    refreshTrail ();     
    refreshCategOptions (); 
 
    toggle('searchtool') ; 
    toggle('pleasewait') ;
      

}
function refreshCategOptions ()
{
     field_select_categ = document.getElementById('download_search_categ');

     var  arrFirstCateg = new Array ();
     var hashtableCateg = new Array();
     var j = 0 ;
     firstcateg = '';
     for (  i= 0 ; i < arrchoices.length ; i++)
     {
       if ( arrchoices[i] != '')
       {
         firstcateg += arrchoices[i] + SEP;
       }
     }
//     firstcateg = arrchoices.concat (SEP);
	for (  i=0 ; i < arrcateg.length ; i++ )
	{ 
             	
            categtemp  = middleString( arrcateg[i] , firstcateg, SEP) ; 
//            alert ( arrcateg[i] + " == " + "**" +  categtemp + "**");
             	
		
		if ( hashtableCateg[categtemp] == null) 
		{
			arrFirstCateg [ j ]  = categtemp ; 
			hashtableCateg[categtemp] = categtemp;
			j++;
		} 		
	       
 	}

 	clearOptions (field_select_categ); 
 	cptopt = 0 ;
//       addOption(field_select_categ, '<i18n:text i18n:key="downloadcenter.categ.all">-All-</i18n:text>','$ALL$')	;	
    
	typedata= "";
	sortfn = compareText;
	for (j=0 ; j < arrFirstCateg.length ; j++ )
	{
	   if ( arrFirstCateg[j] != '') 
	   {
	    label =arrFirstCateg[j];
		value = arrFirstCateg[j];
		
			if (label.match(/^[\d\.]+$/) ) sortfn =compareTextAsFloatDesc;
			else sortfn= compareText;
		 addOption(field_select_categ,label,value, false)	;	
		 cptopt ++;
		 }
		
		 
	 }
	
   	sortSelect(field_select_categ, sortfn);
	addOption(field_select_categ, '-All-','$ALL$' , true)	;	
    (cptopt== 0 ) ? field_select_categ.style.display='none': field_select_categ.style.display='inline';

}

  function resetsearch()
     {
		lang = document.forms[0].download_search_lang.value;
        mod = document.forms[0].download_search_mod.value;
		
		
	   if (lang=='' || mod=='') 
	   {
	    // alert (error_select_msg);
		  return;
	   }
	   
        url = pathdown+ "/preparesearch?mod="+ mod + "&lang="+ lang ;   
		
        arrchoices= new Array();     
        document.location = url;
     }
     
  
     function dosearch()
     {
	
       lang = document.forms[0].download_search_lang.value;
       mod = document.forms[0].download_search_mod.value;
	   
       if (lang=='' || mod=='') 
	   {
	    //  alert (error_select_msg);
		  return ;
	   }
	   
	   
       categ = "";
       for ( i=0 ; i < arrchoices.length ; i++ )
       {
      
         categ += arrchoices[i] + WEB_SEP ; 
       }
      
       document.forms[0].download_search_choices.value =  categ ;
       
       url = pathdown+ "/dosearch/@isnew/desc" + "?mod="+ mod + "&lang="+ lang + "&categories="+ categ  ; 
	   
	  
// alert (url);
//        document.location = url;
          document.forms[0].action= url ;
          document.forms[0].method="POST";
	      document.forms[0].submit();
	      


     }