//http://www.webreference.com/programming/javascript/kh/column2/
var booAjaxWaiting = false;

function AjaxNewDate() {
  var oXmlHttp;
  var oDiv1 = document.getElementById("CalOuterBox");
  
  var lngAjaxYear = document.getElementById("AjaxYear").value;
  var lngAjaxMonth = document.getElementById("AjaxMonth").value;
  
  var strUrl = "/Matrix2010/Ajax/AjaxCalendar.asp";
  var params = "";
  
  // Simple Ajax POST Request:
  oDiv1.style.visibility = "hidden";
  if (window.XMLHttpRequest) {
    booAjaxWaiting = true;
    if (window.XMLHttpRequest) {
      // code for IE7+, Firefox, Chrome, Opera, Safari
      oXmlHttp = new XMLHttpRequest();
      
      if(oXmlHttp.overrideMimeType){
        //FF crash if the returned value is plain text using this. IE7 doesn't support it
        //oXmlHttp.overrideMimeType('text/xml');
        oXmlHttp.overrideMimeType('text/html');
      }
    } else if (window.ActiveXObject) {  //IE6
      oXmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    params = "AjaxYear=" + lngAjaxYear + "&AjaxMonth=" + lngAjaxMonth;
    oXmlHttp.open("POST", strUrl, true);
    
    // Send the proper header information along with the request
    oXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
    oXmlHttp.setRequestHeader("Content-length", params.length);
    oXmlHttp.setRequestHeader("Connection", "close");
    // https://developer.mozilla.org/en/AJAX/Getting_Started
    //oXmlHttp.onreadystatechange = AjaxStateChanged;  // Ensure you don't add bracket like function(); won't work
    oXmlHttp.onreadystatechange = function() {
      AjaxStateChanged( oXmlHttp, 1 );
    };
    oXmlHttp.send(params);
  } else {
    alert ("This program require a Browser compatible with Web 2.0");
  }
  
  return false;
}

function AjaxStateChanged( pXmlHttp, pCancelBox ) {
  var oDiv1 = document.getElementById("CalOuterBox");
  var htmlDoc;
  
  if (pXmlHttp.readyState == 4) {
    // 0 (uninitialized)
    // 1 (loading)
    // 2 (loaded)
    // 3 (interactive)
    // 4 (complete)
    try {
      if (pXmlHttp.status == 200) {
        htmlDoc = pXmlHttp.responseText;
        //request.responseXML.documentElement
        oDiv1.innerHTML = htmlDoc;
        oDiv1.style.visibility = "visible";
        booAjaxWaiting = false;
      } else {
        // Cancel request with Error
        alert ('Ajax function failed [' + pXmlHttp.status + ']'  );
        
        alert (pXmlHttp.responseText);
      }
    } catch(ErrHandle) {
      alert('Caught Exception: ' + ErrHandle.description);
    }
  }
}

/**
*
*  URL encode / decode
*  http://www.webtoolkit.info/
*
**/
 
 /*
var Url = {
 
	// public method for url encoding
	encode : function (string) {
		return escape(this._utf8_encode(string));
	},
 
	// public method for url decoding
	decode : function (string) {
		return this._utf8_decode(unescape(string));
	},
  
	// private method for UTF-8 encoding
	_utf8_encode : function (string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
 
			var c = string.charCodeAt(n);
 
			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
 
		}
 
		return utftext;
	},
  
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;
 
		while ( i < utftext.length ) {
 
			c = utftext.charCodeAt(i);
 
			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
 
		}
 
		return string;
	}
 
}
*/