function AjaxConnection(page) 
{
   this.setOptions=setOptions;
   this.getOptions=getOptions;
   this.connect=connect;
   this.uri=page;
} 
function setOptions(opt)
{
   for(i=0;i<opt.length;i++)  
   {
      this.options += "&"+opt[i];
   }
}
function getOptions()
{
   return this.options;
}
function connect(return_func)
{
    with(this)
    {
        x=init_object();
        x.open("POST", uri,true);
        x.onreadystatechange = function() {
                if (x.readyState != 4)
                        return;
                eval(return_func + '(x.responseText)');
                delete x;
        }
        
        x.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        x.send(options);
    }
}
function init_object() {
        var x;
        try {
                x=new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
                try {
                        x=new ActiveXObject("Microsoft.XMLHTTP");
                } catch (oc) {
                        x=null;
                }
        }
        if(!x && typeof XMLHttpRequest != "undefined")
                x = new XMLHttpRequest();
        if (x)
                return x;
}