if (document.images) {

// About Us
navAboutUs_on = new Image();
navAboutUs_on.src = "images/navAboutUs_on.gif";
navAboutUs = new Image();
navAboutUs.src = "images/navAboutUs.gif";

// Commercial
navCommercial_on = new Image();
navCommercial_on.src = "images/navCommercial_on.gif";
navCommercial = new Image();
navCommercial.src = "images/navCommercial.gif";

// RequestQuote
navRequestQuote_on = new Image();
navRequestQuote_on.src = "images/navRequestQuote_on.gif";
navRequestQuote = new Image();
navRequestQuote.src = "images/navRequestQuote.gif";

// Residential
navResidential_on = new Image();
navResidential_on.src = "images/navResidential_on.gif";
navResidential = new Image();
navResidential.src = "images/navResidential.gif";

// WorkPortfolio
navWorkPortfolio_on = new Image();
navWorkPortfolio_on.src = "images/navWorkPortfolio_on.gif";
navWorkPortfolio = new Image();
navWorkPortfolio.src = "images/navWorkPortfolio.gif";

}