How to keep contents of textbox on click

Hello to everyone.

I'm in need of some help regarding this problem. I've created
a form that contains 2 dependent drop down menus a button
and a text box. What happens is that once the user selects
some stuff from both drop downs and hits the button the
contents of the drop down menus get copied in the text box.

So far so good. The fact is that if the user makes a second
selection in the drop downs and re-clicks thw button the new
contents of the drop downs replace the old ones in the text
box. Instead what I would like to do is simply add the new
contents in the text box without deleting anything
The code for copying the drop downs in the textbox is this:

<script>
oldvalue = "";
function passText(passedvalue) {
if (passedvalue != "") {
var temp2 = document.allproducts.selList1.options[document.allproducts.selList1.selectedIndex].text
var temp3 = document.allproducts.selList2.options[document.allproducts.selList2.selectedIndex].text
var totalvalue = passedvalue+"\n"+oldvalue;
temp2= "Κατηγορία: " + temp2 + "\nΠροϊόν: " + temp3 + "\n\n";
document.allproducts.Notes.value = temp2
// document.displayform.itemsbox.value = totalvalue;
oldvalue = document.allproducts.Notes.value;
}
}
// End -->
</script>


The code for the button once clicked is this:

onClick="MM_callJS('passText(this.allproducts.selList1.opti ons[this.allproducts.selList1.selectedIndex].value)')" value="Add to text box">


I hope somebody can give me a hand here 'cause I'm really stuck for long.

Thank you and bye!

Try this:
document.allproducts.Notes.value += temp2
or
document.allproducts.Notes.value = document.allproducts.Notes.value & temp2
Also: The line
oldvalue = document.allproducts.Notes.value; should be placed after
the line
temp2= "Κατηγορία: " + temp2 + "\nΠροϊόν: " + temp3 + "\n\n"; so that you don't lose the
old value.
I hope this works D...
.
.
.
var totalvalue = passedvalue+"\n"+oldvalue;
temp2= "Κατηγορία: " + temp2 + "\nΠροϊόν: " + temp3 + "\n\n";
document.allproducts.Notes.value = temp2
// document.displayform.itemsbox.value = totalvalue;
oldvalue = document.allproducts.Notes.value;
.
.
.

musa I really don't know how to thank you.

IT WORKS!!!!!!!!!!!

The solution was so obvious that only a newbie like me would

have had a problem here. I had thought of everything else (pass

the function to an array e.t.c) but this.

Thanks a thousand for your precious help and sorry for making your

work even harder (I just saw that I left some categorie's names in greek.

Sorry about that)

Bye, take care and once more THANK YOU!!!!!!!