var DotyArray = new Array();
// Var for hex vals
var hexVals = new Array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
              "A", "B", "C", "D", "E", "F");
var unsafeString = "\"<>%\\^[]`\+\$\,";
// deleted these chars from the include list ";", "/", "?", ":", "@", "=", "&" and #
// so that we could analyze actual URLs
function nodeDotyArray(level, indexval, literal, check) {
  this.level = level
  this.indexval = indexval
  this.literal = literal
  this.check = check;
}
function goto_ext(vURL) {
window.open(changeIt(vURL));
}
function begin_search() {
  vWMod = new String("");
  vDoc = new Object(window.frames["leftFrame"]);
  sest = new String(vDoc.document.forms["get_buttons"].Sest.value);
  while (sest.charAt(0)==" ") sest=sest.substring(1,sest.length);
  while (sest.charAt(sest.length-1)==" ") sest=sest.substring(0,sest.length - 1);
  if (sest.length<2) {
    alert ("Gelieve minstens 2 letters in te tikken");
    vDoc.document.forms["get_buttons"].Sest.value=sest;
    vDoc.document.forms["get_buttons"].Sest.focus();
  }
  else {
      if (vWMod.length == 0)
      {
	  surl = "http://pallas.cegesoma.be/pls/opac/opac.search?";
      }
      else
      {
	  surl = "http://pallas.cegesoma.be/pls/catalo/opac.search?";
      }
      surl += "lan=" + vDoc.document.forms["search_param"].lan.value;
	surl += "&seop=" + vDoc.document.forms["search_param"].seop.value;
	surl += "&sele=" + vDoc.document.forms["search_param"].sele.value; 
	surl += "&sepa=" + vDoc.document.forms["search_param"].sepa.value; 
	surl += "&sest=" + sest; 
	surl += "&senu=" + vDoc.document.forms["search_param"].senu.value; 
	surl += "&chna=" + vDoc.document.forms["search_param"].chna.value; 
	surl += "&doty=" + read_doty(); 
	surl += "&rqdb=" + vDoc.document.forms["search_param"].rqdb.value; 
	surl += "&dbnu=" + vDoc.document.forms["search_param"].dbnu.value; 
      if (vWMod.length == 0)
      {
	  vDoc.location.href=surl;
      }
      else
      {
        parent.parent.parent.add_search_url(surl);
      }
  }
}
function myvoid() {}
function openWindow(width,height,url,windowName) {
    x = (640 - width)/2;
    y = (480 - height)/2;
    if (screen) {
        y = (screen.availHeight - height)/2;
        x = (screen.availWidth - width)/2;
    }
    w1=window.open(url,windowName,'scrollbars=yes,width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x);
    w1.focus();
}
function set_check() {
  var co =  0;
  for (var i = 0; i < DotyArray.length; i++) {
   if (DotyArray[i].check == 1)
   {
     window.frames["leftFrame"].document.forms["get_doty"].elements[i].checked = true;
     co = co + 1;
   }
   if (DotyArray[i].check == 0)
   {
     window.frames["leftFrame"].document.forms["get_doty"].elements[i].checked = false;
   }
  }
  if (co == 0)
  {
     DotyArray[0].check = 1;
     window.frames["leftFrame"].document.forms["get_doty"].elements[0].checked = true;
  }
}
function alter_check(arloc)
{
  var vParLev = new Number();
  var vChi = new Number();
  if (DotyArray[arloc].check == 0) 
  {
    DotyArray[arloc].check = 1;
    // Uncheck parent(s)
    vParLev = DotyArray[arloc].level - 1;
    UnCheck = 0;
    for (i = (arloc-1); i >= 0; i--)
    {
      if (DotyArray[i].level == vParLev)
      {
        DotyArray[i].check = 0;
        // Next Parentlevel
        vParLev = vParLev - 1;
      }
    }
    // Uncheck children
    vChi = 1;
    for (i = (arloc+1); i < DotyArray.length; i++)
    {
      if (DotyArray[i].level > DotyArray[arloc].level)
      {
        if (vChi == 1)
        {
          DotyArray[i].check = 0;
        }
      }
      else
      {
        vChi = 0;
      }
    }
  }
  else
  {
    DotyArray[arloc].check = 0;
  }
  set_check();
  document.frames["leftFrame"].get_buttons.Sest.focus();
}
function read_doty() {
  vDot = new String();
  vDoc = new Object(window.frames["leftFrame"]);
  for (i = 0; i < DotyArray.length; i++)
  {
    if (DotyArray[i].check == 1)
    {
      vDot = vDot + DotyArray[i].indexval;
//      alert (DotyArray[i].indexval);
    }
  }
vDoc.document.forms["search_param"].doty.value=vDot;
//alert (vDot);
return vDot;
}
function browse_archives() {
  parent.BrowseLev = 2;
  vDoc = new Object(window.frames["leftFrame"]);
  vDoc.document.forms["get_buttons"].Sest.value = "";
  vDoc.document.forms["search_param"].sest.value = "";
  vDoc.document.forms["search_param"].seop.value = "7";
  vDoc.document.forms["search_param"].senu.value = "0";
  surl = "http://pallas.cegesoma.be/pls/opac/opac.search?lan=" + vDoc.document.forms["search_param"].lan.value;
  surl += "&seop=7";
  surl += "&sele=" + vDoc.document.forms["search_param"].sele.value; 
  surl += "&sepa=" + vDoc.document.forms["search_param"].sepa.value; 
  surl += "&sest=" + vDoc.document.forms["search_param"].sest.value; 
  surl += "&senu=" + vDoc.document.forms["search_param"].senu.value; 
  surl += "&chna=" + vDoc.document.forms["search_param"].chna.value; 
  surl += "&doty=" + read_doty(); 
  surl += "&rqdb=" + vDoc.document.forms["search_param"].rqdb.value; 
  surl += "&dbnu=" + vDoc.document.forms["search_param"].dbnu.value;
  vDoc.location.href=surl;
}
// Functions for hex vals
function isUnsafe(compareChar)
// this function checks to see if a char is URL unsafe.
// Returns bool result. True = unsafe, False = safe
{
if (unsafeString.indexOf(compareChar) == -1 && compareChar.charCodeAt(0) > 32
    && compareChar.charCodeAt(0) < 123)
   { return false; } // found no unsafe chars, return false
else
   { return true; }
}
function decToHex(num, radix)
// part of the hex-ifying functionality
{
var hexString = "";
while (num >= radix)
      {
       temp = num % radix;
       num = Math.floor(num / radix);
       hexString += hexVals[temp];
      }
hexString += hexVals[num];
return reversal(hexString);
}
function reversal(s) // part of the hex-ifying functionality
{
var len = s.length;
var trans = "";
for (i=0; i<len; i++)
    { trans = trans + s.substring(len-i-1, len-i); }
s = trans;
return s;
}
function convert(val) // this converts a given char to url hex form
{ return  "%" + decToHex(val.charCodeAt(0), 16); }
function changeIt(val)
{
var len     = val.length;
var i       = 0;
var newStr  = "";
for (i=0;i<len;i++)
  {
    if (isUnsafe(val.substring(i,i+1)) == false)
       { newStr = newStr + val.substring(i,i+1); }
    else
       { newStr = newStr + convert(val.substring(i,i+1)); }
  }
return newStr;
}