function boxchangeup(myback) {
document.getElementById(myback).style.background = "url(css/home_styles/images/box_arrow.gif)";
document.getElementById(myback).style.backgroundRepeat = "no-repeat";

document.getElementById(myback).style.paddingLeft = "10px";
}

function boxchangebck(myback) {
document.getElementById(myback).style.background = "none";
document.getElementById(myback).style.paddingLeft = "0px";
}