if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.content{display:none;}\n')
document.write('</style>\n')
}

function contractall(){
if (document.getElementById){
var add=0
while (document.getElementById("dropht"+add)){
document.getElementById("dropht"+add).style.display="none"
add++
}
}
}

function expand(){
if (document.getElementById){
var selectedItem=document.drophtform.drophtoption.selectedIndex
contractall()
document.getElementById("dropht"+selectedItem).style.display="block"
}
}

if (window.addEventListener)
window.addEventListener("load", expand, false)
else if (window.attachEvent)
window.attachEvent("onload", expand)