function newImage(arg) {
rslt = new Image();
rslt.src = arg;
return rslt;
}

function bOver(image) {
document[image].src = eval(image +"_over.src");
}

function bOut(image) {
document[image].src = eval(image +"_out.src");
}

b0_out = newImage('http://www.lisapharm.com/images/interface/button0.png');
b0_over = newImage('http://www.lisapharm.com/images/interface/buttonover0.png');
b1_out = newImage('http://www.lisapharm.com/images/interface/button1.png');
b1_over = newImage('http://www.lisapharm.com/images/interface/buttonover1.png');
b2_out = newImage('http://www.lisapharm.com/images/interface/button2.png');
b2_over = newImage('http://www.lisapharm.com/images/interface/buttonover2.png');
b3_out = newImage('http://www.lisapharm.com/images/interface/button3.png');
b3_over = newImage('http://www.lisapharm.com/images/interface/buttonover3.png');
b4_out = newImage('http://www.lisapharm.com/images/interface/button4.png');
b4_over = newImage('http://www.lisapharm.com/images/interface/buttonover4.png');
b5_out = newImage('http://www.lisapharm.com/images/interface/button5.png');
b5_over = newImage('http://www.lisapharm.com/images/interface/buttonover5.png');
b6_out = newImage('http://www.lisapharm.com/images/interface/button6.png');
b6_over = newImage('http://www.lisapharm.com/images/interface/buttonover6.png');
b7_out = newImage('http://www.lisapharm.com/images/interface/button_int.png');
b7_over = newImage('http://www.lisapharm.com/images/interface/button_intover.png');