function strTrim(tmpStr)
{
tmpStr = tmpStr.replace(/^\s+/,"");//remove leading
tmpStr = tmpStr.replace(/\s+$/,"");//remove trailing
return tmpStr;
}
//------------------------------------------------------------------------------------
function trimFields(obj)
{
for(var i=0; i < obj.elements.length; i++)
{
if(obj.elements[i].type == "text" || obj.elements[i].type == "textarea" || obj.elements[i].type == "password")
{
obj.elements[i].value = strTrim(obj.elements[i].value);
}
}
}
//------------------------------------------------------------------------------------
function chkEmail(tmpStr)
{
var email_pat = /^[a-z][a-z0-9_\.\-]*[a-z0-9]@[a-z0-9]+[a-z0-9\.\-_]*\.[a-z]+$/i;
return(email_pat.test(tmpStr));
}
//Checks URL against pattern
function chkURL(tmpStr)
{
var url_pat = /^(http|https|ftp):\/\/([\w-]+\.)+[\w-]+(\/[\w-\.\/?%&,=#@\/:]*)?/;
return(url_pat.test(tmpStr));
}
//------------------------------------------------------------------------------------
function NewWindow(pageName)
{
window.open(pageName, '', 'width=500,height=500,toolbar=0,menubar=0,location=0,left=50,top=100');
}
//------------------------------------------------------------------------------------
//Refresh captcha image
//-----------------------------------------------------------------------------------
function refreshCaptcha(imgid)
{
var img = new Image();
img.src = 'captcha/show_captcha.php?hash='+parseInt(Math.random() * 10000000000);
document.getElementById(imgid).src = img.src;
}
// Function to validate login form in header
function validateForm()
{
trimFields(objlogin);
if(objlogin.login_user_name.value == '')
{
alert("Please enter your User Name");
objlogin.login_user_name.focus();
return false;
}
if(objlogin.login_password.value == '')
{
alert("Please enter your Password");
objlogin.login_password.focus();
return false;
}
//All fine
return true;
}
//Opens a new window showing the uploaded image
function viewImage(imgFile)
{
imgURL = imgFile;
newWindow = window.open("","newWindow","titlebar=no,width=50,height=50,left=375,top=225");
var doc = newWindow.document;
doc.open();
doc.write('\n');
doc.write('\n');
doc.write('View Image\n');
doc.write('\n');
doc.write('\n');
doc.write('\n');
doc.write('![\"File:](\"'+imgURL+'\")
\n');
doc.write('\n');
doc.write('\n');
newWindow.focus();
doc.close();
}
function validateSearch()
{
trimFields(objSearch);
if(objSearch.keywords.value == '')
{
alert(ALERT_ENTER_KEYWORDS);
objSearch.keywords.focus();
return false;
}
//All fine
return true;
}
//------------------------------------------------------------------//
//Generic AJAX object for all types of HTTP get/post work //
//Author: Debabrata Kar (dk.webtenet@gmail.com) //
//Usage: //
// var ajax = new AJAX(); //
// var arrParam = new Array(); //
// arrParam['name1'] = 'value1'; //
// arrParam['name2'] = 'value2'; //
// arrParam['name3'] = 'value3'; //
// ajax.getRequest(url, arrParam, responseHandler); //
// OR //
// ajax.postRequest(url, arrParam, responseHandler); //
// //
// NOTE: You do not need to escape() or encodeURIComponent() the //
// parameter names or values. AJAX will do it on its own. //
// You need to define responseHandler() function that will handle //
// response back from the server, be it XML or anything else //
//------------------------------------------------------------------//
//The AJAX object
function AJAX()
{
//Private variables (properties)
var __httpRequest = null;
var __callbackFunc = null;
//Private method: __createHttpRequest()
var __createHttpRequest = function()
{
if(window.XMLHttpRequest) //Mozilla, Safari etc
{
__httpRequest = new XMLHttpRequest();
}
else if(window.ActiveXObject) //IE
{
try
{
__httpRequest = new ActiveXObject("MSXML2.XMLHTTP");
}
catch (e)
{
try
{
__httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{
//Do whatever you need to do here
alert("AJAX cannot be used with your browser!");
}
}
}
}
//Private method: __createParameters(arr)
var __createParameters = function(arr)
{
var parameters = ""; //Initialize
for(x in arr)
{
var pName = encodeURIComponent(x);
var pVal = encodeURIComponent(arr[x]);
parameters = (parameters == "")?pName+'='+pVal:parameters+'&'+pName+'='+pVal;
}
return parameters;
}
//Private method: __handleResponse()
var __handleResponse = function()
{
if(__httpRequest.readyState == 4)
{
__callbackFunc(__httpRequest.responseText);
}
}
//Public method: getRequest(url, arrParam, callbackFunc)
this.getRequest = function(url, arrParam, callbackFunc)
{
__createHttpRequest() //recreate ajax object to defeat cache problem in IE
__callbackFunc = callbackFunc;
if(__httpRequest)
{
var param = __createParameters(arrParam);
__httpRequest.onreadystatechange = __handleResponse;
//Include a random number to defeat IE cache problem
__httpRequest.open('GET', url+"?ajaxhash="+Math.random()+'&'+param, true);
__httpRequest.send(null)
}
}
//Public method: postRequest()
this.postRequest = function(url, arrParam, callbackFunc)
{
__createHttpRequest() //recreate ajax object to defeat cache problem in IE
__callbackFunc = callbackFunc;
if (__httpRequest)
{
var param = __createParameters(arrParam);
__httpRequest.onreadystatechange = __handleResponse;
__httpRequest.open('POST', url, true);
__httpRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded; charset=utf-8");
__httpRequest.setRequestHeader("Content-length", param.length);
__httpRequest.setRequestHeader("Connection", "close");
__httpRequest.send(param);
}
}
}