function openclose(p) {
cat=eval("document.getElementById('ca" +p+ "')");
pk=eval("document.getElementById('po" +p+ "')");
if (null!=pk) {
if (pk.style.display=='block') {
cat.style.background='url("/inshop/layout/Img/plus.gif") no-repeat';
pk.style.display='none';
} else {
pk.style.display='block';
cat.style.background='url("/inshop/layout/Img/minus.gif") no-repeat';
}
}
}