// other parameters

    displaywhenempty = "";
    valuewhenempty = -1;

    displaywhennotempty = "";
    valuewhennotempty = 0;
	
	idPraefix = "leocombo_";


function change(currentbox) {
	numb = currentbox.id.split("_");
	currentbox = numb[1];

    i = parseInt(currentbox)+1;

// I empty all combo boxes following the current one

    while ((eval("typeof(document.getElementById(\"" + idPraefix + i+ "\"))!='undefined'")) &&
           (document.getElementById(idPraefix+i)!=null)) {
         son = document.getElementById(idPraefix + i);
	     // I empty all options except the first one (it isn't allowed)
	     for (m=son.options.length-1;m>0;m--) son.options[m]=null;
	     // I reset the first option
	     son.options[0]=new Option(displaywhenempty,valuewhenempty);
	     i = i+1;
    }


// now I create the string with the "base" name ("stringa"), ie. "data_1_0"
// to which I'll add _0,_1,_2,_3 etc to obtain the name of the combo box to fill

    stringa = 'data';
    i = 0;
    while ((eval("typeof(document.getElementById(\"" + idPraefix + i + "\"))!='undefined'")) &&
           (document.getElementById(idPraefix + i)!=null)) {
           eval("stringa=stringa+'_'+document.getElementById(\"" + idPraefix + i + "\").selectedIndex")
           if (i==currentbox) break;
           i = i+1;
    }


// filling the "son" combo (if exists)

    following = parseInt(currentbox)+1;

    if ((eval("typeof(document.getElementById(\"" + idPraefix + following + "\"))!='undefined'")) &&
       (document.getElementById(idPraefix + following)!=null)) {
       son = document.getElementById(idPraefix + following);
       stringa = stringa + "_";
       i = 0;
       while ((eval("typeof("+stringa+i+")!='undefined'")) || (i==0)) {

       // if there are no options, I empty the first option of the "son" combo
	   // otherwise I put "-select-" in it

	   	  if ((i==0) && eval("typeof("+stringa+"0)=='undefined'"))
	   	      if (eval("typeof("+stringa+"1)=='undefined'"))
	   	         eval("son.options[0]=new Option(displaywhenempty,valuewhenempty)");
	   	      else
	             eval("son.options[0]=new Option(displaywhennotempty,valuewhennotempty)");
	      else
              eval("son.options["+i+"]=new Option("+stringa+i+".text,"+stringa+i+".value)");
	      i = i+1;
	   }
       //son.focus()
       i = 1;
       combostatus = '';
       cstatus = stringa.split("_");
       while (cstatus[i]!=null) {
          combostatus=combostatus+cstatus[i];
          i = i+1;
          }
       return combostatus;
    }
}

//-->