Object reference on the return function

[daedge]

I'm having trouble with my object references. For instance, I call “myobject.GetSomeAJAXData();” which the inside says:

UtilClass.HTTP.SubmitXmlHttp(<some>)

That part works fine. My problem is that when the data gets processed and returned from the server, it doesn't recognize what object it was suppose to return to.

Say that the object is the following:

CODE

function myObject(){
this.variable="hellow world!";
this.callbackfunction = function(response)
{
alert(this.variable);
}

}

Below is the JavaScript function that I'm calling (It's in a library that I wrote, hence the prototyping). When I pass (into ‘callBack’) “myObject.callbackfunction” or "myObject.callbackfunction", it calls the function correctly. However, when I reference "this", it refers to the window object and not ‘myObject’, thus throwing an error when trying to access this variable.

Is there any way this could be done without resulting in an error?
_________________
-Ed

[daedge]

CODE

UtilClass.prototype.HTTP.SubmitXmlHttp=function (method,url,data,callBack,callBackError,async)
{
if (null == async) async = true;
var xmlHttp = VW.HTTP.GetXmlHttp();
xmlHttp.onreadystatechange = function()
{
if (4 == xmlHttp.readyState)
{
if (200 == xmlHttp.status)
{
if(null!=callBack)
{
var evaledCallback=eval(callBack);
evaledCallback(xmlHttp.responseText);
}
}
else if (callBackError != null)
{
callBackError(xmlHttp)
}
else
{
alert(xmlHttp.status + " : An error occurred. Please try again later.");
}
xmlHttp=null;
}
}
xmlHttp.open(method, url, async);
if (null != data)
{
data=encodeURI(data);
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlHttp.setRequestHeader("Content-Length", data.length);
}
xmlHttp.send(data);
}
_________________
-Ed