/* xbdhtml.js (Cross-Browser Nav4/IE4 DHTML API) 
   14 May 98, Eric Krock, Copyright Netscape Communications
   Permission is granted to reuse, redistribute, and modify 
   without charge. 

   THIS IS THE COMPRESSED, COMMENT-FREE VERSION OF xbdhtml.js.
   For commented version, see 
   http://developer.netscape.com/docs/technote/dynhtml/csspapi/xbdhtml.js
*/

function dw(str, minVersion, maxVersion)
{   if ( ((dw.arguments.length < 3) || (is.major <= maxVersion)) 
         && ((dw.arguments.length < 2) || (is.major >= minVersion)))
    document.write(str)  
}


function dwb (str, aBoolean)
{   if  ((dwb.arguments.length < 2) || aBoolean)
    document.write(str)  
}


function sv(str, minVersion, maxVersion)
{   if ( ((sv.arguments.length < 3) || (is.major <= maxVersion)) 
         && ((sv.arguments.length < 2) || (is.major >= minVersion)))
    return str;
    else return "";
}


function sb (str, aBoolean)
{   if  ((sb.arguments.length < 2) || aBoolean)
    return str;
    else return "";
}




/* The following stub function API for cross-browser HTML 
   element positioning and visibility (CSSP access) was
   derived from Mike Hall's excellent CBDHTML API, which is
   free for downloading, reuse, and modification, and can
   be found online at:
   http://members.aol.com/MHall75819/dhtml/cbdhtml.html
   Thanks also to Danny Goodman (http://www.dannyg.com/)
   and Dan Steinman (http://members.xoom.com/dynduo/).
*/
function layerClipOrder (cssClipString)
{  var commaPos = cssClipString.lastIndexOf(",");
   return (cssClipString.substring(commaPos+1) + "," + cssClipString.substring(0,commaPos));
}

function genElt (name, content, left, top, z, width, height, visibility, 
                 backgroundColor, backgroundImage, clip, relative, 
                 hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname) 
{ var markup = "";
  if (is.nav && (is.major>=4 || !hideEltOnOlderBrowsers) && 
      !useDivInsteadOfLayer)
  { var tagname = (relative)?'ILAYER':'LAYER';
    if (visibility && (visibility!=''))
    {  if (visibility=="hidden") visibility = "hide";
       else if (visibility=="visible") visibility = "show";
    }
    markup = '<' + tagname + ' ID="' + name + '"' + ((classname)?' CLASS="' + 
        classname + '"':'') + ((left)?' LEFT="' + left + '"':'') + 
        ((top)?' TOP="' + top + '"':'') + ((width)?' WIDTH="' + width + '"':'') + 
        ((height)?' HEIGHT="' + height + '"':'') + 
        ((visibility && (visibility!='')) ? ' VISIBILITY="' + visibility + '"' : '') + 
        ((z)?' Z-INDEX="' + z + '"':'') + 
        ((backgroundColor)?' BGCOLOR="' + backgroundColor + '"':'') + 
        ((backgroundImage)?' BACKGROUND="' + backgroundImage + '"':'') +  
        ((clip)?' CLIP="' + layerClipOrder(clip) + '"':'') + 
        '>' + ((content)?content:'') + '</' + tagname + '>';
  }
  else if ((is.ie || (is.nav && useDivInsteadOfLayer)) && (is.major>=4 || !hideEltOnOlderBrowsers))
  { markup = '<DIV ID="' + name + '"' +  
        ((classname)?' CLASS="' + classname + '"':'') + 
        ' STYLE="position:' + ((relative)?'relative;':'absolute;') + 
        ' overflow:none;' + 
        ((left)?' left:' + left + 'px;':'') + 
        ((top)?' top:' + top + 'px;':'') + 
        ((height)?' height:' + height + 'px;':'') + 
        ((width)?' width:' + width + 'px;':'') + 
        ((visibility && (visibility!='')) ? ' visibility:' + visibility + ';' : '') + 
        ((z)?' z-index:' + z + ';':'') + 
        ((backgroundColor)?' background-color:' + backgroundColor + ';':'') + 
        ((backgroundImage)?' background-image:url("' + backgroundImage + '");':'') +  
        ((clip)?' clip:rect("' + clip + '");':'') + 
        '">' + ((content)?content:'') + '</DIV>';
  }
  return markup;
}

function writeElt (name, content, left, top, z, width, height, visibility, 
                   backgroundColor, backgroundImage, clip, relative, 
                   hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname) 
{ if (writeElt.arguments.length < 15) classname = false;
  if (writeElt.arguments.length < 14) useDivInsteadOfLayer = false;
  if (writeElt.arguments.length < 13) hideEltOnOlderBrowsers = false;
  if (writeElt.arguments.length < 12) relative = false;
  if (writeElt.arguments.length < 11) clip = false;
  if (writeElt.arguments.length < 10) backgroundImage = false;
  if (writeElt.arguments.length < 9) backgroundColor = false;
  if (writeElt.arguments.length < 8) visibility = false;
  if (writeElt.arguments.length < 7) height = false;
  if (writeElt.arguments.length < 6) width = false;
  if (writeElt.arguments.length < 5) z = false;
  if (writeElt.arguments.length < 4) top = false;
  if (writeElt.arguments.length < 3) left = false;
  if (writeElt.arguments.length < 2) content = false;
  document.write (genElt (name, content, left, top, z, width, height, visibility, 
                    backgroundColor, backgroundImage, clip, relative, 
                 hideEltOnOlderBrowsers, useDivInsteadOfLayer, classname));
}


function getElt () 
{ if (is.nav4up) {
    var currentLayer = document.layers[getElt.arguments[0]];
    for (var i=1; i<getElt.arguments.length && currentLayer; i++)
    {   currentLayer = currentLayer.document.layers[getElt.arguments[i]];
    }
    return currentLayer;
  } 
  else if (is.ie4up) {
    var elt = eval('document.all.' + getElt.arguments[getElt.arguments.length-1]);
    return(elt);
  }
}


function setEltVisibility (elt, value)
{  if (is.nav4up) elt.visibility = value;
   else if (is.ie4up) elt.style.visibility = value;
}


function getEltVisibility (elt)
{  if (is.nav4up) 
   {  var value = elt.visibility;
      if (value == "show") return "visible";
      else if (value == "hide") return "hidden";
      else return value;
   }
   else if (is.ie4up) return elt.style.visibility;
}


function moveEltTo (elt, x, y) 
{ if (is.nav4up) elt.moveTo(x, y);
  else if (is.ie4up) {
    elt.style.pixelLeft = x;
    elt.style.pixelTop  = y;
  }
}


function moveEltBy (elt, x, y) 
{ if (is.nav4up) elt.moveBy(x, y);
  else if (is.ie4up)  {
    elt.style.pixelLeft += x;
    elt.style.pixelTop  += y;
  }
}


function setEltLeft (elt, x) {
  if (is.nav4up)     elt.left=x;
  else if (is.ie4up) elt.style.pixelLeft=x;
}


function getEltLeft (elt) {
  if (is.nav4up)     return (elt.left);
  else if (is.ie4up) return (elt.style.pixelLeft);
}


function setEltTop (elt, y) 
{ if (is.nav4up)     elt.top=y;
  else if (is.ie4up) elt.style.pixelTop=y;
}


function getEltTop (elt) 
{ if (is.nav4up)     return (elt.top);
  else if (is.ie4up) return (elt.style.pixelTop);
}


function getEltWidth (elt)
{ if (is.nav4up) return(elt.width);
  else if (is.ie4up) return(elt.style.pixelWidth);
}


function getEltHeight (elt)
{ if (is.nav4up) return (elt.height);
  else if (is.ie4up) return (elt.style.pixelHeight);
}


function setEltClip (elt, cliptop, clipright, clipbottom, clipleft) 
{ if (is.nav4up) {
    elt.clip.left   = clipleft;
    elt.clip.top    = cliptop;
    elt.clip.right  = clipright;
    elt.clip.bottom = clipbottom;
  }
  else if (is.ie4up)  elt.style.clip = 'rect(' + cliptop + ' ' +  
       clipright + ' ' + clipbottom + ' ' + clipleft +')';
}


function tempClipObj (elt)
{  var clipStr = elt.style.clip;
   clipStr = clipStr.substring (clipStr.indexOf("(") + 1);
   this.top = parseInt(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.right = parseInt(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.bottom = parseInt(clipStr);
   clipStr = clipStr.substring (clipStr.indexOf(" ") + 1);
   this.left = parseInt(clipStr);
}


function getEltClipLeft (elt) 
{ if (is.nav4up)     return (elt.clip.left);
  else if (is.ie4up) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.left;
  }
}


function getEltClipTop (elt) 
{ if (is.nav4up)     return (elt.clip.top);
  else if (is.ie4up) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.top;
  }
}


function getEltClipRight (elt) {
  if (is.nav4up)     return (elt.clip.right);
  else if (is.ie4up) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.right;
  }
}


function getEltClipBottom (elt) 
{ if (is.nav4up)     return (elt.clip.bottom);
  else if (is.ie4up) 
  {  var tempClip = new tempClipObj (elt);
     return tempClip.bottom;
  }
}


function getEltClipWidth (elt) 
{ if (is.nav4up)     return (elt.clip.width);
  else if (is.ie4up) return (getEltClipRight(elt) - getEltClipLeft(elt));
}


function getEltClipHeight (elt) 
{ if (is.nav4up)     return (elt.clip.height);
  else if (is.ie4up) return (getEltClipBottom(elt) - getEltClipTop(elt));
}


function getCurrentWinWidth() 
{ if (is.nav4up)     return(window.innerWidth);
  else if (is.ie4up) return(document.body.clientWidth);
}


function getCurrentWinHeight() 
{ if (is.nav4up)     return(window.innerHeight);
  else if (is.ie4up) return(document.body.clientHeight);
}


function getEltZIndex (elt) 
{ if (is.nav4up) return(elt.zIndex);
  else if (is.ie4up) return (elt.style.zIndex);
}


function setEltZIndex (elt, z) 
{ if (is.nav4up) elt.zIndex = z;
  else if (is.ie4up) elt.style.zIndex = z;
}

/* end CBDHTML derivative functions  */

function setEltBackgroundImage (elt, imageFilePath) 
{ if (is.nav4up) elt.background.src = imageFilePath;
  else if (is.ie4up) elt.style.backgroundImage = "url(" + imageFilePath + ")";
}


function getEltBackgroundImage (elt) 
{ if (is.nav4up) return (elt.background.src);
  else if (is.ie4up) { 
     var theURL = elt.style.backgroundImage;
     if (typeof(theURL) == "string")
     {  var URLlen = theURL.length;
        return (theURL.substring (4, URLlen-1));
     }
     else return(theURL);
  }
}


function setEltBackgroundColor (elt, colorNumber) 
{ if (is.nav4up) elt.bgColor = colorNumber;
  else if (is.ie4up) elt.style.backgroundColor = colorNumber;
}


var colorNameString = "aqua,black,blue,fuchsia,gray,green,lime,maroon,navy,olive,purple,red,silver,teal,yellow,white";
var colorNames   = new Array ("aqua", "black", "blue", "fuchsia", "gray",   "green", "lime", "maroon", "navy", "olive",  "purple", "red",    "silver", "teal", "yellow", "white");
var colorNumbers = new Array (0xffff, 0,       0xff,   0xff00ff,  0x808080, 0x8000,  0xff00, 0x800000, 0x80,   0x808000, 0x800080, 0xff0000, 0xc0c0c0, 0x8080, 0xffff00, 0xffffff);

function isColorName (aString)
{ return ( (typeof(aString) == "string") && (colorNameString.indexOf(aString) != -1));
}


function colorNameToNumber (colorName)
{ for (var i=0; i<16; i++) if (colorNames[i]==colorName) return colorNumbers[i];
  // Return string name unchanged if not found.
  // This handles IE4 non-CSS1-standard color names gracefully.
  return colorName;
}


function colorNumberToName (colorNumber)
{ for (var i=0; i<16; i++) if (colorNumbers[i]==colorNumber) return colorNames[i];
  return null;
}


function getEltBackgroundColor (elt) 
{ if (is.nav4up) return (elt.bgColor);
  else if (is.ie4up) {
     var colorVal = elt.style.backgroundColor;
     if (isColorName(colorVal)) return colorNameToNumber (colorVal);
     else if (typeof(colorVal) == "string") 
          return (("0x" + colorVal.substring(1)) - 0);
     else return colorVal;
  }
}