function newImage( imgSrc ) {

 var imgName = new Image();
 imgName.src = imgSrc;

 return imgName;
}

function change( imgName, imgLocation ) {
 document[imgName].src = imgLocation ;
}

var preloadFlag = false;

function loadImages() {
 if (document.images)  {
	 about_us_over = newImage("images/buttons/1_about_us_over.jpg");
	 luxury_vehicle_over = newImage("images/buttons/2_luxury_vehicle_over.jpg");
	 security_over = newImage("images/buttons/3_security_over.jpg");
	 contact_us_over = newImage("images/buttons/4_contact_us_over.jpg");

	 preloadFlag = true;
 }
}

function goTermsAndConditions()
{
	window.open("terms_conditions.html",null,"height=500,width=500,status=no,toolbar=no,menubar=no,location=no","false");
}