Onchange event for multiple drop downs

[sazzie]

Hi,

I would like to know if it is possible to get 2 drop down lists in the same form to respond
to a single onchange event declaration?

So effectively, I want my selections to be sent only after the second drop down list has been altered.

[fenway]

Then only put the onchange on the second one, and have it check for a valid "first" input.

[soman]

u can help from online..........

[sazzie]

[quote author=fenway link=topic=124884.msg518140#msg518140 date=1170264016]
Then only put the onchange on the second one, and have it check for a valid "first" input.
[/quote]

Thanks. That makes sense. Can you advise on how I check for the "valid first entry"?

Also, my form select element has an onchange function attached to it:

[code]
<form method="post" action="" >
<select name="month" id="select_month" onChange="test();">
................
[/code]

I use a separate pair of images to scroll through the months in both directions using the function below:

[code]
function scroll(dir)
{
var elementID=document.getElementById("select_month");

if( dir == 0 )
{
if( elementID.selectedIndex-1 >= 0 )
elementID.selectedIndex-=1;
}
else
{
if( elementID.selectedIndex+1 <= 11 )
elementID.selectedIndex+=1;
}
}
[/code]

What I need is to get my scroll function to respond to onChange=test() just as my select drop downlist input element.

Can you help please? ???

[fenway]

Well, I'm not sure what you mean... you have 2 dropdowns, sounds like you need to get at both selections

[worldworld]

Well you can have .js file for two drop downs... If you want i can provide the source code...