function  validateLogin() 
{
    	var errText = ""; 

	if (!validateNotEmpty(frm.Username.value) || !validateNotEmpty(frm.Password.value))	
	{
		errText += "	UserName or/and Password is missing.\n";
	}
	else
	{
		 if (!validateEmail(frm.Username.value)) 	
		 	errText += "	Username is invalid.\n";	
	}
	
	if (errText.length > 0) 
	{
		alert("Your information could not be submitted because of the following reason(s):\n\n" 
   		+ errText + "\nPlease correct and resubmit.");
		return false;
	}
	else
		return true;
		
}

function validateEmail( strValue) {

	var objRegExp  = /^[a-z0-9]([a-z0-9_\-\.]*)@([a-z0-9_\-\.]*)(\.[a-z]{2,4}(\.[a-z]{2}){0,2})$/i;
  	return objRegExp.test(strValue);
}

function validateNotEmpty( strValue ) {

   	var strTemp = strValue;
   	strTemp = trimAll(strTemp);
   	if(strTemp.length > 0){
     	return true;
   	}  
   	return false;
}

function trimAll( strValue ) {

 var objRegExp = /^(\s*)$/;

    if(objRegExp.test(strValue)) {
       strValue = strValue.replace(objRegExp, '');
       if( strValue.length == 0)
          return strValue;
    }
    
   objRegExp = /^(\s*)([\W\w]*)(\b\s*$)/;
   if(objRegExp.test(strValue)) {
       strValue = strValue.replace(objRegExp, '$2');
    }
  return strValue;
}

function checkCookies()
{
	var oneDay= 1*24*60*60*1000;
	var expDate = new Date();
	expDate.setTime (expDate.getTime() + oneDay);
	var cookieExpires = expDate.toGMTString();
	//set your temprorary cookie
	document.cookie="verifyCookie=test; expires="+cookieExpires
	//check to see if ANY cookies exist, including the one you just set
	if (!document.cookie.length>0)
	{
		alert("\nYour browser doesn't support cookies.\n" +
			  "or they are currently disables.\n");
		return false;
	}

	//now be a good Netizen and clear out the unwanted stuff
	document.cookie="verifyCookie=CLEAR; expires=Sun, 09-Nov-97 01:00:00 GMT";
}

function showLogged()
{ 
	//alert("showLogged");
	if (document.getElementById)
	{ 
		var obj1 = document.getElementById('login'); 
        	//alert(obj1); 
		var obj2 = document.getElementById('account-login'); 
		//alert(obj2.style.display);
		//if (obj1.style.diaplay == 'block')
		//{ 
			obj1.style.display = 'none'; 
			obj2.style.display = 'block'; 
		//} 
	} 
} 

function showLoginDiv()
{	
	if (document.getElementById)                                   
	{                                                              
		var obj1 = document.getElementById('login');                                                    
		var obj2 = document.getElementById('account-login');   
                      
		obj1.style.display = 'block';                   
		obj2.style.display = 'none';                                                                      
	}
}       
              
function getCookie(cookieStr, cookiePar)
{       
	//alert("cookieStr: " + cookieStr + " cookiePar: " + cookiePar);
	if (cookieStr.length > 0)
	{
		var ind1=cookieStr.indexOf(cookiePar);
        
		if (ind1!=-1)
		{	
			var ind2=cookieStr.indexOf('&', ind1+1);
			  
			if (ind2==-1)
				ind2=cookieStr.length;

			var cookieVal = cookieStr.substring(ind1+cookiePar.length, ind2);
			//alert("cookieStr: " + cookieStr + " cookiePar: " + cookiePar + " ind1: " + ind1 + " ind2: " + ind2 + " cookieVal: " + cookieVal + " xxx: " + cookieStr.substring(ind1, ind2));
			if (cookieVal.length > 0)
				return cookieVal;
		}
	}
	return '';
}

function checkPageLoad()
{
	var userId = "";
	//alert(location.href);
	if (document.cookie.length>0)
	{
		var theCookie=""+document.cookie;
		//alert("theCookie: " + theCookie);
 		var ind=theCookie.indexOf('rCookie');
 		if (ind!=-1) 
 		{
 			var ind1=theCookie.indexOf(';',ind);
 			if (ind1==-1) 
 				ind1=theCookie.length; 
 			var thisCookie=theCookie.substring(ind+8,ind1);
 			   
			if (thisCookie.length > 0)
 			{
 				//alert("thisCookie: " + thisCookie); 
 				var userName = getCookie(thisCookie, '&name=');
 				if (userName.length > 0)
 				{

 					document.getElementById('username').appendChild(document.createTextNode(userName));
 					document.getElementById('username1').appendChild(document.createTextNode(userName));
 					
	 				userId = getCookie(thisCookie, 'rID=');
	 				
	 			} 
 			}
 		}
	}
	
	if (userId.length > 0)
		showLogged();
	else
		showLoginDiv();

}

function changeParam(str)
{
	try {
    netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
   } catch (e) {
    alert("Permission UniversalBrowserRead denied.");
   }

	str = "id="+escape(str);
  	if(window.XMLHttpRequest) 
  	{
   		request = new XMLHttpRequest();
  	} 
  	else if(window.ActiveXObject) 
  	{
   		request = new ActiveXObject("Microsoft.XMLHTTP");
	}

 	if(request)																																																																																																																																																															
 	{																																																																																																																																																															
  		request.open("POST", "https://www.roanoke.com/userAccount/EncryptUserId.aspx",false);																																																																																																																																																															
  		request.setRequestHeader("Content-type","application/x-www-form-urlencoded");																																																																																																																																																															
  		request.setRequestHeader("Content-length",str.length);																																																																																																																																																															
  		request.send(str);																																																																																																																																																															
  		return request.responseText;																																																																																																																																																															
 	}																																																																																																																																																															
}

function sha1Hash(msg)
{
    // constants [§4.2.1]
    var K = [0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6];

    // PREPROCESSING 
 
    msg += String.fromCharCode(0x80);  // add trailing '1' bit to string [§5.1.1]

    // convert string msg into 512-bit/16-integer blocks arrays of ints [§5.2.1]
    var l = Math.ceil(msg.length/4) + 2;  // long enough to contain msg plus 2-word length
    var N = Math.ceil(l/16);              // in N 16-int blocks
    var M = new Array(N);

    for (var i=0; i<N; i++) {
        M[i] = new Array(16);
        for (var j=0; j<16; j++) {  // encode 4 chars per integer, big-endian encoding
            M[i][j] = (msg.charCodeAt(i*64+j*4)<<24) | (msg.charCodeAt(i*64+j*4+1)<<16) | 
                      (msg.charCodeAt(i*64+j*4+2)<<8) | (msg.charCodeAt(i*64+j*4+3));
        } // note running off the end of msg is ok 'cos bitwise ops on NaN return 0
    }
    // add length (in bits) into final pair of 32-bit integers (big-endian) [§5.1.1]
    // note: most significant word would be ((len-1)*8 >>> 32, but since JS converts
    // bitwise-op args to 32 bits, we need to simulate this by arithmetic operators
    M[N-1][14] = ((msg.length-1)*8) / Math.pow(2, 32); M[N-1][14] = Math.floor(M[N-1][14])
    M[N-1][15] = ((msg.length-1)*8) & 0xffffffff;

    // set initial hash value [§5.3.1]
    var H0 = 0x67452301;
    var H1 = 0xefcdab89;
    var H2 = 0x98badcfe;
    var H3 = 0x10325476;
    var H4 = 0xc3d2e1f0;

    // HASH COMPUTATION [§6.1.2]

    var W = new Array(80); var a, b, c, d, e;
    for (var i=0; i<N; i++) {

        // 1 - prepare message schedule 'W'
        for (var t=0;  t<16; t++) W[t] = M[i][t];
        for (var t=16; t<80; t++) W[t] = ROTL(W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16], 1);

        // 2 - initialise five working variables a, b, c, d, e with previous hash value
        a = H0; b = H1; c = H2; d = H3; e = H4;

        // 3 - main loop
        for (var t=0; t<80; t++) {
            var s = Math.floor(t/20); // seq for blocks of 'f' functions and 'K' constants
            var T = (ROTL(a,5) + f(s,b,c,d) + e + K[s] + W[t]) & 0xffffffff;
            e = d;
            d = c;
            c = ROTL(b, 30);
            b = a;
            a = T;
        }

        // 4 - compute the new intermediate hash value
        H0 = (H0+a) & 0xffffffff;  // note 'addition modulo 2^32'
        H1 = (H1+b) & 0xffffffff; 
        H2 = (H2+c) & 0xffffffff; 
        H3 = (H3+d) & 0xffffffff; 
        H4 = (H4+e) & 0xffffffff;
    }

    return H0.toHexStr() + H1.toHexStr() + H2.toHexStr() + H3.toHexStr() + H4.toHexStr();
}

//
// function 'f' [§4.1.1]
//
function f(s, x, y, z) 
{
    switch (s) {
    case 0: return (x & y) ^ (~x & z);           // Ch()
    case 1: return x ^ y ^ z;                    // Parity()
    case 2: return (x & y) ^ (x & z) ^ (y & z);  // Maj()
    case 3: return x ^ y ^ z;                    // Parity()
    }
}

//
// rotate left (circular left shift) value x by n positions [§3.2.5]
//
function ROTL(x, n)
{
    return (x<<n) | (x>>>(32-n));
}

//
// extend Number class with a tailored hex-string method 
//   (note toString(16) is implementation-dependant, and  
//   in IE returns signed numbers when used on full words)
//
Number.prototype.toHexStr = function()
{
    var s="", v;
    for (var i=7; i>=0; i--) { v = (this>>>(i*4)) & 0xf; s += v.toString(16); }
    return s;
}