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+/* -----------------------------------------------------------------------------
+ file: ajax.js
+ file version: 1.1.0
+ date: 2008-05-25
+ ------------------------------------------------------------------------------
+ author: grum at grum.dnsalias.com
+ << May the Little SpaceFrog be with you >>
+ ------------------------------------------------------------------------------
+
+ this classes provides base functions to add ajax into html page
+
+ + create_httpobject provide a simple function to create an HTML request to a
+ server ; return an XMLHttpRequest object (or compatible object for IE)
+
+ + tHttpObject is a class providing :
+ - an XMLHttpRequest object
+ -
+
+ ------------------------------------------------------------------------------
+ HISTORY VERSION
+ v1.0.1 + [create_httpobject] overrideMimeType unknown by IE 7.0 ;
+ v1.1.0 + add create_httpobject2 with mimetype parameter
+
+ -------------------------------------------------------------------------- */
+
+
+ function create_httpobject(requesttype, charset, ajaxurl, async)
+ {
+ return(create_httpobject2(requesttype, charset, ajaxurl, async, ''));
+ }
+
+ function create_httpobject2(requesttype, charset, ajaxurl, async, mimetype)
+ {
+ if (window.XMLHttpRequest)
+ {
+ // IE7 & FF method
+ http_request = new XMLHttpRequest();
+ }
+ else
+ {
+ //Other IE method.....
+ if (window.ActiveXObject)
+ {
+ try
+ {
+ http_request = new ActiveXObject("Msxml2.XMLHTTP");
+ }
+ catch (e)
+ {
+ try
+ {
+ http_request = new ActiveXObject("Microsoft.XMLHTTP");
+ }
+ catch (e)
+ {
+ window.alert("Your browser is unable to use XMLHTTPRequest");
+ } // try-catch
+ } // try-catch
+ }
+ } // if-else
+
+ if(charset=='') { charset='utf-8'; }
+
+ http_request.onreadystatechange = function() { };
+ http_request.open(requesttype.toUpperCase(), ajaxurl, async);
+
+ if(mimetype=='')
+ {
+ mimetype='text/html';
+ }
+
+ try
+ {
+ http_request.overrideMimeType(mimetype+'; charset='+charset);
+ }
+ catch(e)
+ {
+ }
+
+ if(requesttype.toUpperCase()=='POST')
+ {
+ http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
+ }
+
+ //method to restitute an XML object ; needed for compatibility between FF&IE
+ http_request.XML = httpobject_responseXML;
+
+ return(http_request);
+ }
+
+
+ function httpobject_responseXML()
+ {
+ if (document.implementation && document.implementation.createDocument)
+ {
+ //ff method
+ return(this.responseXML);
+ }
+ else
+ {
+ //ie method
+ return(xmlCreateFromString(this.responseText));
+ }
+ } \ No newline at end of file