Help with JavaScript?

[RobbDogg]

I'm trying to pass a php variable to a javascript function like this:My JavaScript function is set up like thisfunction qna(id) { if (Element.empty('qna-content')) { new Ajax.Updater('qna-content', 'ajaxtestbackend.php?id='How do you print the id variable so that new Ajax.Updater('qna-content', 'ajaxtestbackend.php?id=' looks like this:new Ajax.Updater('qna-content', 'ajaxtestbackend.php?id=1'or what ever the current id is. I guess I'm asking is how do you place a variable inside a string of text that is already inclosed by quotes?

[Pens66]

I am thinking you want to do this:new Ajax.Updater('qna-content', 'ajaxtestbackend.php?id='+id