function mainroll() {
number = Math.floor(Math.random()*3)
if (number==0)
document.write('<a href="#" title=""><img src="orange_vette.jpg" WIDTH=392 HEIGHT=203 border="0" alt=""></a>')
if (number==1)
document.write('<a href="#" title=""><img src="red_vette.jpg" WIDTH=392 HEIGHT=203 border="0" alt=""></a>')
if (number==2)
document.write('<a href="#" title=""><img src="red_vette2.jpg" WIDTH=392 HEIGHT=203 border="0" alt=""></a>')
}