var preloadFlag = false;

if (document.images)
{
  var onImgArray = new Array();

  onImgArray['home'] = new Image();
  onImgArray['company'] = new Image();
  onImgArray['contacts'] = new Image();
  onImgArray['forms'] = new Image();
  onImgArray['links'] = new Image();
  onImgArray['clientlogin'] = new Image();
  onImgArray['logout'] = new Image();
  onImgArray['BROKERAGE'] = new Image();
  onImgArray['PROPERTY MANAGEMENT'] = new Image();
  onImgArray['CORPORATE ADVISORY'] = new Image();
  onImgArray['CONSULTING'] = new Image();
  
  onImgArray['home'].src = 'images/home_on.gif';
  onImgArray['company'].src = 'images/company_on.gif';
  onImgArray['contacts'].src = 'images/contacts_on.gif';
  onImgArray['forms'].src = 'images/forms_on.gif';
  onImgArray['links'].src = 'images/links_on.gif';
  onImgArray['clientlogin'].src = 'images/clientlogin_on.gif';
  onImgArray['logout'].src = 'images/logout_on.gif';
  onImgArray['BROKERAGE'].src = 'images/o_brokerage.jpg';
  onImgArray['PROPERTY MANAGEMENT'].src = 'images/o_management.jpg';
  onImgArray['CORPORATE ADVISORY'].src = 'images/o_advisory.jpg';
  onImgArray['CONSULTING'].src = 'images/o_consulting.jpg';

  var offImgArray = new Array();

  offImgArray['home'] = new Image();
  offImgArray['company'] = new Image();
  offImgArray['contacts'] = new Image();
  offImgArray['forms'] = new Image();
  offImgArray['links'] = new Image();
  offImgArray['clientlogin'] = new Image();
  offImgArray['logout'] = new Image();
  offImgArray['BROKERAGE'] = new Image();
  offImgArray['PROPERTY MANAGEMENT'] = new Image();
  offImgArray['CORPORATE ADVISORY'] = new Image();
  offImgArray['CONSULTING'] = new Image();

  offImgArray['home'].src = 'images/home.gif';
  offImgArray['company'].src = 'images/company.gif';
  offImgArray['contacts'].src = 'images/contacts.gif';
  offImgArray['forms'].src = 'images/forms.gif';
  offImgArray['links'].src = 'images/links.gif';
  offImgArray['clientlogin'].src = 'images/clientlogin.gif';
  offImgArray['logout'].src = 'images/logout.gif';
  offImgArray['BROKERAGE'].src = 'images/brokerage.jpg';
  offImgArray['PROPERTY MANAGEMENT'].src = 'images/management.jpg';
  offImgArray['CORPORATE ADVISORY'].src = 'images/advisory.jpg';
  offImgArray['CONSULTING'].src = 'images/consulting.jpg';

  preloadFlag = true;
}

function imageOn(imgName)
{
//alert(imgName);
//alert(onImgArray[imgName].src);
  if (preloadFlag)
  {
    document.images[imgName].src = onImgArray[imgName].src;
  }
}



function imageOff(imgName)
{
  if (preloadFlag)
  {
    document.images[imgName].src = offImgArray[imgName].src;
  }
}