[bubberz]

I'm trying to use a .js file to get autocomplete on a dropdownlist control in my ASP.NET application, but keep getting a syntax error.

The error on the .js file is:

Line 15, Char 1, Object Expected:

var keys;
var timeStamp;
timeStamp = new Date();
function dd_onkeypress(DropDownList1) {
var key = event.keyCode;
event.returnValue=false;
//a-z, A-Z, 0-9
if ((key>=97 && key<=122) || (key>=65 && key<=90) || (key>=48 && key<=57)) {
key = String.fromCharCode(key);
var now = new Date();
var diff = (now.getTime() - timeStamp.getTime());
timeStamp = new Date();
//1 seconds = 1000 milliseconds<BR>
if (diff > 1000) {
keys = key;
} else {
keys = keys + key;
}
var cnt;
for (cnt=0;cnt<document.all
(DropDownList1).children.length;cnt++) {
var itm = document.all(DropDownList1).children[cnt].text;
if (itm.substring(0,keys.length).toLowerCase()==keys. toLowerCase())
{
document.getElementById(DropDownList1).selectedInd ex = cnt;
break;
}
}
}
//document.all(DropDownList1).onchange();
}

In my Page_Load .aspx page, I've got:
DropDownList1.Attributes.Add("onkeyup", "javascript:return dd_onkeypress(this);")

[TwoD]

document.all takes a string (the id of an element) as an argument, not the object itself. Change document.all(DropDownList1) to document.all(DropDownList1.id) and it should work if you have an id attribute on the dropdown list.