// from http://www.dustindiaz.com/top-ten-javascript
function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function doLogin(form) {
	// first encrypt pass using salt
	form['pass'].value = hex_hmac_sha1(form['salt'].value, form['pass_field'].value);
	// clear field
	fake = '';
	for (i = 0; i < form['pass_field'].value.length; i++) {
		fake = fake + '-';
	}
	form['pass_field'].value = fake;
	// then set cookie
	if (form['remember'].checked) {
		setCookie('c_pass', form['pass'].value, 100, '/');
	}
	// then encrypt pass again using session key
	form['pass'].value = hex_hmac_sha1(form['key'].value, form['pass'].value);
	return true;
}

function doRegister(form) {
	// encrypt pass using salt
	
	if(form['pass_field_1'].value.length > 0) {
		form['pass1'].value = hex_hmac_sha1(form['salt'].value, form['pass_field_1'].value);
	}
	
	if(form['pass_field_2'].value.length > 0) {
		form['pass2'].value = hex_hmac_sha1(form['salt'].value, form['pass_field_2'].value);
	}
	
	// pass_field_curr does not allways exist
	// must be encrypted with key AND salt
	if(form['pass_field_curr'] && form['pass_field_curr'].value.length > 0) {
		form['passcurr'].value = hex_hmac_sha1(form['key'].value, hex_hmac_sha1(form['salt'].value, form['pass_field_curr'].value));
	}
	
	// clear field
	
	fake = '';
	for (i = 0; i < form['pass_field_1'].value.length; i++) {
		fake = fake + '-';
	}
	form['pass_field_1'].value = fake;
	
	fake = '';
	for (i = 0; i < form['pass_field_2'].value.length; i++) {
		fake = fake + '-';
	}
	form['pass_field_2'].value = fake;

	fake = '';
	// pass_field_curr does not allways exist
	if (form['pass_field_curr']) {
		for (i = 0; i < form['pass_field_curr'].value.length; i++) {
			fake = fake + '-';
		}
	}
	form['pass_field_curr'].value = fake;
	document.form.submit();
	return true;
}


function myValidation(field,validatefor) {
    str = field.value;
    var alphanumeric = new RegExp("[^a-zA-Z0-9 ,.]");
   var alpha = new RegExp("[^a-zA-Z ]");
   var numeric = new RegExp("[^0-9]");
   var regex;
   var message;
   switch (validatefor){
      case "alphanumeric":{
         regex = alphanumeric;
         message = "Please enter alphanumeric characters."
         break;
      }
      case "alphabetic":{
         regex = alpha;
         message = "Please enter alphabets."
         break;
      }
      case "numeric":{
      	regex = numeric;
      	message = "Please enter only numbers"
      	break;
      }
   }
   
   if(str.search(regex)!=-1)
   {
   	  document.getElementById('continue').disabled = true;
      alert(message);
      field.focus();
      return false ;
   }else{
   	  document.getElementById('continue').disabled = false;
   }
}