1) Script Title: Basic Ajax Routine

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...tm?agefield=32

3) Describe problem: I'm trying to reference a value returned from the script it's sending to. Basically, I want to do a hostname lookup via a PHP script. The script will return a 1 or 0, depending if the hostname is in DNS or not.

I want to be able to reference that value on the javascript side after the getting the value for a client side error.

Here is basically what I'm trying to do...
Code:
function processGetPost(){
	var myajax=ajaxpack.ajaxobj
	var myfiletype=ajaxpack.filetype
	if (myajax.readyState == 4){ //if request of file completed
		if (myajax.status==200 || window.location.href.indexOf("http")==-1){ //if request was successful or running script locally
			//if (myfiletype=="txt")
			//	alert(myajax.responseText)
			
			return myajax.responseText
		}
	}
}
function deviceLookup(hostname){
	if(hostname.length > 0){
		var retVal = ajaxpack.postAjaxRequest("lookupHost.php", "hostname="+hostname, processGetPost, "txt");
		if(retVal == '1'){
			return true;
		}else{
			return false;
		}
	}else{
		return false;
	}
}

function validate(frm){
	if(frm.DeviceName.value == ''){
		alert("Server Name is required");
		frm.DeviceName.focus();
		return false;
	}else{
		if(!deviceLookup(frm.DeviceName.value)){
			alert("Host name not found");
			frm.DeviceName.focus();
			return false;
		}
	}
}
If I alert alert(myajax.responseText), I see a 1 or 0 returned from the processing script. The problem is that retVal in deviceLookup() is null or empty. I think the ajax call is running independently, and not procedurally (I'm guessing because of the call back). Any ideas on how to easily pull this off?

Thanks!
hanji