//var xhr=null
var this_domain = get_my_domain();

function get_my_domain()
{
        var full_url = window.location.href;
        var reg_exp = new RegExp("^(http[s]{0,1}\:\/\/[^\/]*\/).*", "g");

        return full_url.replace(reg_exp, "$1");
}

function get_xmlhttp()
{
	var xhr = null ;
        if(window.XMLHttpRequest){
                xhr=new XMLHttpRequest();
                if(xhr.overrideMimeType) {
                        xhr.overrideMimeType("text/xml");
                }
        } else {
                if(window.ActiveXObject) {
                   try {
                           xhr=new ActiveXObject('msxml2.xmlhttp.3.0');
                   } catch(e) {
                	   try {
                        	   xhr=new ActiveXObject("Microsoft.XMLHTTP");
		           } catch (e) {
		                   window.alert("Unable to XMLHTTP");
		   	   }
		   }  
		}
	}

	return xhr ;
}