function AttachEvent(element, _event, _function)
{
    if(window.addEventListener)
    { // Mozilla, Netscape, Firefox
	    element.addEventListener(_event, _function, false);
    } 
    else 
    { // IE
	    element.attachEvent('on'+_event, _function);
    }
}


var Url = {

    // public method for url encoding
    encode : function (string) {
        return escape(this._utf8_encode(string));
    },

    // public method for url decoding
    decode : function (string) {
        return this._utf8_decode(unescape(string));
    },

    // private method for UTF-8 encoding
    _utf8_encode : function (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) {

            var c = string.charCodeAt(n);

            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    },

    // private method for UTF-8 decoding
    _utf8_decode : function (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }

}


//
//  Checkable Repeater

function CheckableRepeater_OnClick(fieldId)
{
    // e gives access to the event in all browsers
    if (!e) var e = window.event;
	if (e.target) element = e.target;
	else if (e.srcElement) element = e.srcElement;

    if (element.checked)
    {
        all_AddToList(fieldId, element.value);
    }
    else
    {
        all_RemoveFromList(fieldId, element.value);
    }
}

// adds intID number to list contained in field strField
function all_AddToList(fieldId, value)
{
    var field = document.getElementById(fieldId);
    
	if ((',' + field.value + ',').indexOf(',' + value + ',') == -1)
	{
		field.value += ',' + value;
	}
	
	while(field.value.indexOf(',,') != -1)
	{
		field.value = field.value.replace(',,', ',');
	}

	if (field.value.indexOf(',') == 0)
	{
		field.value = field.value.substr(1);
	}
		
	if (field.value.lastIndexOf(',') == (field.value.length - 1))
	{
		field.value = field.value.substr(0, field.value.length - 1);
	}
}

// removes intID number from list contained in field strField
function all_RemoveFromList(fieldId, value)
{
    var field = document.getElementById(fieldId);

	if ((',' + field.value + ',').indexOf(',' + value + ',') != -1)
	{
		field.value = (',' + field.value + ',').replace(',' + value + ',', ',');
	}

	while(field.value.indexOf(',,') != -1)
	{
		field.value = field.value.replace(',,', ',');
	}

	if (field.value.indexOf(',') == 0)
	{
		field.value = field.value.substr(1);
	}
		
	if (field.value.lastIndexOf(',') == (field.value.length - 1))
	{
		field.value = field.value.substr(0, field.value.length - 1);
	}
}