select box and java

i have a question ...

how can i move the values from one multiple select box to the other?

all i have now is a part of the script ...

i can move the value of the field but what i need is to move the description also.


ths is the script i'm using now:

function test(one,two) {
var anOption = document.createElement("OPTION")
document.form1.select1.options.add(anOption)
anOption.innerText = two
anOption.Value = one
}

Thanks in advance for an eventual answer