var xmlHttp;  
//var requestURL = "http://localhost/";
var requestURL = "http://www.bignoticeboard.co.uk/";
var is_ie = (navigator.userAgent.indexOf('MSIE') >= 0) ? 1 : 0; 
var is_ie5 = (navigator.appVersion.indexOf("MSIE 5.5")!=-1) ? 1 : 0; 
var is_opera = ((navigator.userAgent.indexOf("Opera6")!=-1)||(navigator.userAgent.indexOf("Opera/6")!=-1)) ? 1 : 0; 
//netscape, safari, mozilla behave the same??? 
var is_netscape = (navigator.userAgent.indexOf('Netscape') >= 0) ? 1 : 0; 

var strErrorMessageStart = "<table height='100%'><tr><td height='100%' align='center' valign='middle'>"
var strErrorMessageEnd = "</td></tr></table>";


// XMLHttp send GET request		 
function xmlHttp_Get(xmlhttp, url, bAsynch) 
{ 
	xmlhttp.open("GET", url, bAsynch); 
	xmlhttp.send(null); 
} 
		
		
function xmlHttp_Post( xmlhttp, url, postInfo, bAsynch )
{
	xmlHttp.open("POST", url, bAsynch)
	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	xmlHttp.send(postInfo);
}
		
		
function GetXmlHttpObject(handler) 
{ 
	var objXmlHttp = null;    //Holds the local xmlHTTP object instance 

	//Depending on the browser, try to create the xmlHttp object 
	if (is_ie){ 
		//The object to create depends on version of IE 
		//If it isn't ie5, then default to the Msxml2.XMLHTTP object 
		var strObjName = (is_ie5) ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP'; 
         
		//Attempt to create the object 
		try{ 
			objXmlHttp = new ActiveXObject(strObjName); 
			objXmlHttp.onreadystatechange = handler; 
		} 
		catch(e){ 
		//Object creation errored 
			alert('IE detected, but object could not be created. Verify that active scripting and activeX controls are enabled'); 
			return; 
		} 
	} 
	else if (is_opera){ 
		//Opera has some issues with xmlHttp object functionality 
		alert('Opera detected. The page may not behave as expected.'); 
		return; 
	} 
	else{ 
		// Mozilla | Netscape | Safari 
		objXmlHttp = new XMLHttpRequest(); 
		objXmlHttp.onload = handler; 
		objXmlHttp.onerror = handler; 
	} 
     
	//Return the instantiated object 
	return objXmlHttp; 
} 

function getFormValues(frmObject)
{
	var str = "";
	var valueArr = null;
	var val = "";
	var strValue = "";
	for (var i = 0; i < frmObject.elements.length; i++)
	{
		switch(frmObject.elements[i].type)
		{
		    
			case "text":
			    strValue = frmObject.elements[i].value;
			    strValue = strValue.replace("&","<amp>");
				str += frmObject.elements[i].name + "=" + strValue + "&";
				break;
			case "textarea":
			    strValue = frmObject.elements[i].value;
			    strValue = strValue.replace("&","<amp>");
				str += frmObject.elements[i].name + "=" + strValue + "&";
				break;
			case "select-one":
			    strValue = frmObject.elements[i].value;
			    strValue = strValue.replace("&","<amp>");
				str += frmObject.elements[i].name + "=" + strValue + "&";
				break;
			case "checkbox":
				if(frmObject.elements[i].checked = true)
				{
					strChecked = "Y";
				}
				else
				{
					strChecked = "N";
				}
				str += frmObject.elements[i].name + "=" + strChecked + "&";
				break;
			case "hidden":
				str += frmObject.elements[i].name + "=" + frmObject.elements[i].value + "&";
				break;
		}
	}
	str = str.substr(0,(str.length - 1));
	return str;
}