var useBrowser = false;

var imagePath = '\\Pic\\Design\\';
var leftPart = 'b_';
var leftROPart = 'b_';
var rightPart = '.gif';
var rightROPart = '_ro.gif';

if(document.images)
{
 useBrowser = true;
 loadImages('news', 'map', 'autors', 'art', 'vb_hlp', 'errors', 'progs', 'controls', 'samp', 'others', 'books', 'slinks', 'conf', 'search', 'list');
}

function loadImages()
{
 var argIndex;
 for (argIndex = 0; argIndex < loadImages.arguments.length; argIndex++)
 {
  newImage = new Image;
  newImage.src = imagePath + leftROPart + loadImages.arguments[argIndex] + rightROPart;
 }
}

function replaceOrig(imageName)
{
 if(useBrowser)
 {
  document[imageName].src = imagePath + leftROPart + imageName + rightROPart;
 }
} 


function restoreOrig(imageName)
{
 if(useBrowser)
 {
  document[imageName].src = imagePath + leftPart + imageName + rightPart;
 }
}