/* jQuery extension functions */

// Empties a select box
(function($){
	$.fn.emptySelect = function() {
		return this.each(function() {
			if (this.tagName == 'SELECT') { this.options.length = 0; };
		});
	}
})(jQuery);

// Fills a select box from associative JS array
(function($){
	$.fn.loadSelect = function(optionsDataArray) {
		return this.emptySelect().each(function() {
			if (this.tagName == 'SELECT') {
				var selectElement = this;
				$.each(optionsDataArray, function(index,optionData) {
					var option = new Option(optionData.txt, optionData.value);
					if ($.browser.msie) { selectElement.add(option); }
					else { selectElement.add(option,null); };
				});
			};
		});
	}
})(jQuery);

// Disables a form element
	(function($){
	$.fn.disableMe = function() {
		return this.each(function() {
			if (typeof(this.disabled) != 'undefined') { $(this).attr('disabled','disabled'); };
	  });							
	}
})(jQuery);

// Enables a form element
(function($){
	$.fn.enableMe = function() {
		return this.each(function() {
			if (typeof(this.disabled) != 'undefined') { $(this).removeAttr('disabled'); };
	  });							
	}
})(jQuery);

// Selects a form element
(function($){
	$.fn.selectMe = function() {
		return this.each(function() {
			if (typeof(this.selected) != 'undefined') { $(this).attr('selected','selected'); };
	  });							
	}
})(jQuery);



/* General function from public domain */

/* Cookie handling */
function getCookie(name) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	};
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
};

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 deleteCookie(name, path, domain) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
			( ( path ) ? ';path=' + path : '') +
			( ( domain ) ? ';domain=' + domain : '' ) +
			';expires=Thu, 01-Jan-1970 00:00:01 GMT';
};
/* Cookie handling */


// ====================================================================
//       URLEncode and URLDecode functions
//
// Copyright Albion Research Ltd. 2002
// http://www.albionresearch.com/
//
// ====================================================================
function URLEncode(plaintext) {
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	   if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		   var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
			    alert( "Unicode Character '" 
                        + ch 
                        + "' cannot be encoded using standard URL encoding.\n" +
				          "(URL encoding only supports 8-bit characters.)\n" +
						  "A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			};
		};
	}; // for

	return (encoded == '') ? false : encoded;
};

function URLDecode(encoded) {
   // Replace + with ' '
   // Replace %xx with equivalent character
   // Put [ERROR] in output if %xx is invalid.
   var HEXCHARS = "0123456789ABCDEFabcdef"; 
   var plaintext = "";
   var i = 0;
   while (i < encoded.length) {
      var ch = encoded.charAt(i);
	   if (ch == "+") {
	       plaintext += " ";
		   i++;
	   } else if (ch == "%") {
			if (i < (encoded.length-2) 
					&& HEXCHARS.indexOf(encoded.charAt(i+1)) != -1 
					&& HEXCHARS.indexOf(encoded.charAt(i+2)) != -1 ) {
				plaintext += unescape( encoded.substr(i,3) );
				i += 3;
			} else {
				alert( 'Bad escape combination near ...' + encoded.substr(i) );
				plaintext += "%[ERROR]";
				i++;
			};
		} else {
		   plaintext += ch;
		   i++;
		};
	}; // while

	return (plaintext == '') ? false : plaintext;
};

/* General function from public domain */