function changeContent(list) {
if (list.options[list.selectedIndex].value != "nil" && list.options[list.selectedIndex].value != "") 
parent.content.location.href = list.options[list.selectedIndex].value
}

function changeTop(list) {
if (list.options[list.selectedIndex].value != "nil" && list.options[list.selectedIndex].value != "") 
top.location.href =list.options[list.selectedIndex].value
}