//check if browser is capable, NS3+, IE4+ 
if (document.images) { 
img1N= new Image;(99,41);
img1N.src= 'images/menu1.jpg' ;
img2N= new Image(133,41);
img2N.src= 'images/menu2.jpg' ;
img3N= new Image(113,41);
img3N.src= 'images/menu3.jpg' ;
img4N= new Image(140,41);
img4N.src= 'images/menu4.jpg' ;
img5N= new Image(118,41);
img5N.src= 'images/menu5.jpg' ;
img6N= new Image(140,41);
img6N.src= 'images/menu6.jpg' ;
img7N= new Image(83,41);
img7N.src= 'images/menu7.jpg' ;

//hover or rollover image 

img1H= new Image(99,41); 
img1H.src= 'images/menu1hover.jpg' ; 
img2H= new Image(133,41);
img2H.src= 'images/menu2hover.jpg' ; 
img3H= new Image(113,41);
img3H.src= 'images/menu3hover.jpg' ; 
img4H= new Image(140,41);
img4H.src= 'images/menu4hover.jpg' ; 
img5H= new Image(118,41); 
img5H.src= 'images/menu5hover.jpg' ; 
img6H= new Image(140,41);
img6H.src= 'images/menu6hover.jpg' ; 
img7H= new Image(83,41);
img7H.src= 'images/menu7hover.jpg' ; 

function myOn(myImgName) { 

document[myImgName].src=eval(myImgName+ 'H' ).src; 

} 

function myOut(myImgName) { 

document[myImgName].src=eval(myImgName+ 'N' ).src; 

}

} //end of if document.images