// JavaScript Document

function getXMLHttp() {
	var xmlHttp = null;
	if(window.XMLHttpRequest) { // Mozilla, Safari, ...
    	xmlHttp = new XMLHttpRequest();
        if(xmlHttp.overrideMimeType) {
        	xmlHttp.overrideMimeType('text/xml');
		}
	}
    else if(window.ActiveXObject) { // IE
    	try{
        	xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
        catch(e) {
        	try {
            	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
            catch (e) {
            	alert("Error: ActiveXObject is not loaded...");
    		}
		}
	}
    if(!xmlHttp) {
    	alert("Error Occured!! :( Cannot create an xHTTP instance...");
    	return false;
	}
  	return xmlHttp;
	/*
	if(window.ActiveXObject){
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if(window.XMLHttpRequest){
		xmlHttp = new XMLHttpRequest();
	}
	return xmlHttp;
	*/
}


function xmlhttpPost(strURL, strSubmit, strResultFunc) {
   var xmlHttpReq = false;
      
        // Mozilla/Safari
        if (window.XMLHttpRequest) {
                xmlHttpReq = new XMLHttpRequest();
             //   xmlHttpReq.overrideMimeType('text/xml');
        }
        // IE
        else if (window.ActiveXObject) {
                xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
        }
	
	xmlHttpReq.open('POST', strURL, true);
	xmlHttpReq.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	xmlHttpReq.onreadystatechange = function() {
	if (xmlHttpReq.readyState == 4) {
           strResponse = xmlHttpReq.responseText;
           switch (xmlHttpReq.status) {
                   // Page-not-found error
                   case 404:
                           alert('Error: Not Found. The requested URL ' + 
                                   strURL + ' could not be found.');
                           break;
                   // Display results in a full window for server-side errors
                   case 500:
                           handleErrFullPage(strResponse);
                           break;
                   default:
                           // Call JS alert for custom error or debug messages
                           if (strResponse.indexOf('Error:') > -1 || 
                                   strResponse.indexOf('Debug:') > -1) {
                                   alert(strResponse);
                           }
                           // Call the desired result function
                           else {
							   //alert(strResponse);
							   //return false;
                                 eval(strResultFunc + '(strResponse);');
                           }
                           break;
           }
   }
 }	
 
  xmlHttpReq.send(strSubmit);
}

function handleErrFullPage(strIn) {

        var errorWin;

        // Create new window and display error
        try {
                errorWin = window.open('', 'errorWin');
                errorWin.document.body.innerHTML = strIn;
        }
        // If pop-up gets blocked, inform user
        catch(e) {
                alert('An error occurred, but the error message cannot be' +
                        ' displayed because of your browser\'s pop-up blocker.\n' +
                        'Please allow pop-ups from this Web site.');
        }
}