ÿþ/*

------------------------------

-------Array Methods----------

------------------------------

*/



Array.prototype.compare = function(testArr) {

    if (this.length!=testArr.length) return false;

    for (var i = 0; i < testArr.length; i++) {

        if (this[i].compare) { 

            if (!this[i].compare(testArr[i])) return false;

        }

        if (this[i]!=testArr[i]) return false;

    }

    return true;

}



Array.prototype.diff = function(testArr) {

    var diffArr = new Array();

    for (var i = 0; i < testArr.length; i++) {

        if (this[i].compare) { 

            if (!this[i].compare(testArr[i])) {

                diffArr.push(testArr[i]);

            }

        }

        if (this[i]!=testArr[i]) diffArr.push(testArr[i]);

    }

    return diffArr;

}



//TODO: Save previous display state of the element before toggling

Element.implement({

    toggle: function()

    {

        this.getStyle('display') == "none" ? this.setStyle('display', '') : this.setStyle('display', 'none');

    },

    

    show: function()

    {

        this.setStyle('display', '');

    },

    

    hide: function()

    {

        this.setStyle('display', 'none');

    },

    

    isVisible: function()

    {

        return this.getStyle('display') != "none";

    }

})



/*

------------------------------

-------Object Methods----------

------------------------------

*/



function cloneObject(obj) {

    eval("var tmp = " + obj.toJSON());

    return tmp;

}



function cloneObject(obj) {

    eval("var tmp = " + obj.toJSON());

    return tmp;

}





/*

------------------------------

-------String Methods----------

------------------------------

*/



String.implement({	

 

	/*

	Property: utf8Encode

		encodes an ISO-8859-1 string to UTF-8.

 

	Credits:

		slightly based on UTF-8 data encode / decode <http://www.webtoolkit.info/javascript-utf8.html>

	*/

	utf8Encode: function(){

		var c;

		var encoded = '';

		var s = this.replace(/\r\n/g,"\n");

		var i = 0;

		var l = s.length;

 

		while(i < l){

			c = s.charCodeAt(i);

			if(c < 128) encoded += String.fromCharCode(c);

			else {

				if((c > 127) && (c < 2048)){

					encoded += String.fromCharCode((c >> 6) | 192);

					encoded += String.fromCharCode((c & 63) | 128);

				} else {

					encoded += String.fromCharCode((c >> 12) | 224);

					encoded += String.fromCharCode(((c >> 6) & 63) | 128);

					encoded += String.fromCharCode((c & 63) | 128);

				}

			}

			i++;

		}

		return encoded;

	},

 

	/*

	Property: utf8Decode

		converts a string with ISO-8859-1 characters encoded with UTF-8 to single-byte ISO-8859-1.

 

	Credits:

		slightly based on UTF-8 data encode / decode <http://www.webtoolkit.info/javascript-utf8.html>

	*/

	utf8Decode: function(){

		var decoded = '';

		var s = this;

		var l = s.length;

		var i = c = c1 = c2 = 0;

 

		while(i < l){

			c = s.charCodeAt(i);

			if(c < 128){

				decoded += String.fromCharCode(c);

				i++;

			} else {

				if((c > 191) && (c < 224)){

					c2 = s.charCodeAt(i+1);

					decoded += String.fromCharCode(((c & 31) << 6) | (c2 & 63));

					i += 2;

				} else {

					c2 = s.charCodeAt(i+1);

					c3 = s.charCodeAt(i+2);

					decoded += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));

					i += 3;

				}

			}

		}

		return decoded;

	}

});