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('earthimages/button0.png');

b0_over = newImage('earthimages/buttonover0.png');

b1_out = newImage('earthimages/button1.png');

b1_over = newImage('earthimages/buttonover1.png');

b2_out = newImage('earthimages/button2.png');

b2_over = newImage('earthimages/buttonover2.png');

b3_out = newImage('earthimages/button3.png');

b3_over = newImage('earthimages/buttonover3.png');

b4_out = newImage('earthimages/button4.png');

b4_over = newImage('earthimages/buttonover4.png');

b5_out = newImage('earthimages/button5.png');

b5_over = newImage('earthimages/buttonover5.png');

b6_out = newImage('earthimages/button6.png');

b6_over = newImage('earthimages/buttonover6.png');