function rand_img() {
var ran_unrounded=Math.random()*39;
var ran_number=Math.round(ran_unrounded); 
document.write ("<img src='images/random/image");
document.write ( ran_number+1 );
document.write (".jpg' border='0'>");
}

function rand_quote() {
var ran_unrounded=Math.random()*18;
var ran_number=Math.round(ran_unrounded); 
document.write ("<img src='images/quotes/Quote");
document.write ( ran_number+1 );
document.write (".gif' border='0'>");
}