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/*
* utils.js
* Useful javascript functions, shared between mySociety sites.
*
* Copyright (c) 2006 UK Citizens Online Democracy. All rights reserved.
* Email: francis@mysociety.org. WWW: http://www.mysociety.org
*
* $Id: utils.js,v 1.3 2006-10-10 15:53:05 matthew Exp $
*
*/
mySociety = {
/* Returns an XMLHTTP object, if available.
* Returns false if XMLHTTP not supported. */
getXMLHTTP : function() {
var xmlhttp=false;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
// JScript gives us Conditional compilation, we can cope with old IE versions.
// and security blocked creation of the objects.
try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) {
try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
catch (E) { xmlhttp = false; }
}
@end @*/
if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
try { xmlhttp = new XMLHttpRequest(); }
catch (e) { xmlhttp=false; }
}
if (!xmlhttp && window.createRequest) {
try { xmlhttp = window.createRequest(); }
catch (e) { xmlhttp=false; }
}
return xmlhttp;
},
asyncRequest : function(url, func) {
var xmlhttp = mySociety.getXMLHTTP();
if (!xmlhttp)
return false;
xmlhttp.open('GET', url, true);
xmlhttp.onreadystatechange = function() {
func(xmlhttp);
}
xmlhttp.send(null);
return xmlhttp;
}
}
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