How to assemble a .net web request in javascript

This is the function that I used to generate a web service request (soap envelope) using mootools. The mootools hash is the only moo tools specific feature used in this example and is should easily be ported over to any other library, or just regular javascript using overloaded parameters. I use this function in conjunction with my other post on calling a .Net Web Service via mootools.


function getSoapEnvelope(wsFunction, wsNamespace, paramHash){
var envelope = '';
envelope += '<?xml version="1.0" encoding="utf-8"?>' + "\n"
envelope += '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">' + "\n"
envelope += ' <soap:Body>' + "\n"
envelope += ' <' + wsFunction + ' xmlns="' + wsNamespace + '">' + "\n"
if (paramHash.length > 0){
var keys = paramHash.keys();
var values = paramHash.values();
for (var i = 0; i < paramHash.length; i++){
envelope += " <" + keys[i] + ">";
envelope += values[i];
envelope += "</" + keys[i] + ">\n";
}
}
envelope += ' </' + wsFunction + '>' + "\n"
envelope += ' </soap:Body>' + "\n"
envelope += '</soap:Envelope>'
return envelope
}