if (document.images) {
	homebuttonup       = new Image();
    homebuttonup.src   = "images/home.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "images/home2.gif" ;
    
    aboutUsbuttonup       = new Image();
    aboutUsbuttonup.src   = "images/aboutUs.gif" ;
    aboutUsbuttondown     = new Image() ;
    aboutUsbuttondown.src = "images/aboutUs2.gif" ;
    
    productsservicebuttonup       = new Image();
    productsservicebuttonup.src   = "images/productsservice.gif" ;
    productsservicebuttondown     = new Image() ;
    productsservicebuttondown.src = "images/productsservice2.gif" ;
    
    employmentbuttonup       = new Image();
    employmentbuttonup.src   = "images/employment.gif" ;
    employmentbuttondown     = new Image() ;
    employmentbuttondown.src = "images/employment2.gif" ;
    
    projectPicturesbuttonup       = new Image();
    projectPicturesbuttonup.src   = "images/projectPictures.gif" ;
    projectPicturesbuttondown     = new Image() ;
    projectPicturesbuttondown.src = "images/projectPictures2.gif" ;
    
    contactbuttonup       = new Image();
    contactbuttonup.src   = "images/contact.gif" ;
    contactbuttondown     = new Image() ;
    contactbuttondown.src = "images/contact2.gif" ;
	

}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "down.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "up.src" );
    }
}