function Trim(nStr){return nStr.replace(/(^\s*)|(\s*$)/g,"");} 

function loginValidation()
{
	var flag="";
	var remembr="";
	if(window.XMLHttpRequest)
		{
			http=new XMLHttpRequest();
		}
		else if(window.ActiveXObject)
		{
			http=new ActiveXObject("Microsoft.XMLHTTP");
		} 
		
		//var x= document.getElementById('ur_profilename').value;
		
		if($('#userName').val() == "" && $('#userPass').val() == ""){
			$('#login_error').html("Email Id and/or Password cannot be blank");  
			flag = "1";
		}
		
		if($('#userName').val() == "" && $('#userPass').val() != ""){
			$('#login_error').html("Email Id and/or Password cannot be blank");  
			flag = "1";
		}
		
		if($('#userName').val() != "" && $('#userPass').val() == ""){
			$('login_error').html("Email Id and/or Password cannot be blank");  
			flag = "1";
		}
		
		if($('#remember_me').attr('checked') == true){
			remembr="&rem="+$('#remember_me').val();
		}else{
			remembr="";
		}
		if(flag){
			document.getElementById("userPass").value = "";
			return false;
		}else{
			var url = "userCheck.php?uname="+URLEncode($('#userName').val())+"&upass="+encodeBase64($('#userPass').val())+remembr;
			//alert(url);
			http.open("GET", url , true);
			http.onreadystatechange = usernamechekprocess;
			http.send(null);
			return false;
		}
}

function usernamechekprocess(){
	if (http.readyState == 4) {
		if(http.status==200){
			if(Trim(http.responseText)=="notavail"){
				document.getElementById("login_error").innerHTML="Email Id or Password you entered is incorrect";
				$('userPass').value = "";
				return false;
			}else{
				window.location.href=Trim(http.responseText);
				return false;
			}
		}
	}
}


function URLEncode (clearString) {
  var output = '';
  var x = 0;
  clearString = clearString.toString();
  var regex = /(^[a-zA-Z0-9_.]*)/;
  while (x < clearString.length) {
    var match = regex.exec(clearString.substr(x));
    if (match != null && match.length > 1 && match[1] != '') {
    	output += match[1];
      x += match[1].length;
    } else {
      if (clearString[x] == ' ')
        output += '+';
      else {
        var charCode = clearString.charCodeAt(x);
        var hexVal = charCode.toString(16);
        output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase();
      }
      x++;
    }
  }
  return output;
}


var END_OF_INPUT = -1;

var base64Chars = new Array(
    'A','B','C','D','E','F','G','H',
    'I','J','K','L','M','N','O','P',
    'Q','R','S','T','U','V','W','X',
    'Y','Z','a','b','c','d','e','f',
    'g','h','i','j','k','l','m','n',
    'o','p','q','r','s','t','u','v',
    'w','x','y','z','0','1','2','3',
    '4','5','6','7','8','9','+','/'
);

var reverseBase64Chars = new Array();
for (var i=0; i < base64Chars.length; i++){
    reverseBase64Chars[base64Chars[i]] = i;
}

var base64Str;
var base64Count;
function setBase64Str(str){
    base64Str = str;
    base64Count = 0;
}
function readBase64(){    
    if (!base64Str) return END_OF_INPUT;
    if (base64Count >= base64Str.length) return END_OF_INPUT;
    var c = base64Str.charCodeAt(base64Count) & 0xff;
    base64Count++;
    return c;
}

function encodeBase64(str){
    setBase64Str(str);
    var result = '';
    var inBuffer = new Array(3);
    var lineCount = 0;
    var done = false;
    while (!done && (inBuffer[0] = readBase64()) != END_OF_INPUT){
        inBuffer[1] = readBase64();
        inBuffer[2] = readBase64();
        result += (base64Chars[ inBuffer[0] >> 2 ]);
        if (inBuffer[1] != END_OF_INPUT){
            result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30) | (inBuffer[1] >> 4) ]);
            if (inBuffer[2] != END_OF_INPUT){
                result += (base64Chars [((inBuffer[1] << 2) & 0x3c) | (inBuffer[2] >> 6) ]);
                result += (base64Chars [inBuffer[2] & 0x3F]);
            } else {
                result += (base64Chars [((inBuffer[1] << 2) & 0x3c)]);
                result += ('=');
                done = true;
            }
        } else {
            result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30)]);
            result += ('=');
            result += ('=');
            done = true;
        }
        lineCount += 4;
        if (lineCount >= 76){
            result += ('\n');
            lineCount = 0;
        }
    }
    return result;
}