how to set header

Suite and Optimus Suite 5
#1

Hi ,
i am using one of the existing code to post ajax request . but i want to set header also for this request . can any one please help to know , how to set the header ?
Below is my code :

dhtmlxAjax.post(storage_server_script, data, function (loader) {
dba.wins.window(“ExportPopup”).setText(“Press link to download file.”);
dba.wins.window(“ExportPopup”).progressOff();

var exportResult = loader.xmlDoc.responseXML.getElementsByTagName(‘ExportResult’).item(0);

if (exportResult != null)
{
dba.wins.window(“ExportPopup”).attachHTMLString("

<a href=’" + download_action + “?fileId=” + exportResult.getAttribute(‘record’) + "’>Click here to download export result
");
}
else
{
dba.wins.window(“ExportPopup”).attachHTMLString("
Error: " + loader.xmlDoc.responseXML.getElementsByTagName(‘error’).item(0).firstChild.nodeValue + “
”);
}
});

I am using dhtmlajax.js , and when modified this file for below code

dtmlXMLLoaderObject.prototype.loadXML = function(a, b, c, d) {
this.rSeed && (a += (a.indexOf("?") != -1 ? “&” : “?”) + “a_dhx_rSeed=” + (new Date).valueOf());
this.filePath = a;
this.xmlDoc = !_isIE && window.XMLHttpRequest ? new XMLHttpRequest : new ActiveXObject(“Microsoft.XMLHTTP”);
if (this.async) this.xmlDoc.onreadystatechange = new this.waitLoadFunction(this);
this.xmlDoc.open(b ? “POST” : “GET”, a, this.async);
d ? (this.xmlDoc.setRequestHeader(“User-Agent”, “dhtmlxRPC v0.1 (” + navigator.userAgent + “)”), this.xmlDoc.setRequestHeader(“Content-type”,
“text/xml”)) : b && this.xmlDoc.setRequestHeader(“Content-type”, “application/x-www-form-urlencoded”);
this.xmlDoc.setRequestHeader(“X-Requested-With”, “XMLHttpRequest”);
this.xmlDoc.send©;
this.async || (new this.waitLoadFunction(this))()
};

which is setting request header to set my custom header , it is working , but can we do it out side this dhtmlajax.js ?
by adding some code for
this.xmlDoc.setRequestHeader(“Myheader”, “MyHeader_Value”);

#2

In case of using the custom headers for your requests please, try to use the query() method:
docs.dhtmlx.com/api__dhtmlxajax_query.html