//This function will allow you to select ASP.net controls client id's without having to do the whole <%# Dropdownlist.ClientID %>
//example usage would be $.clientID('ASP Control Name').whatever
$.extend({
    clientID: function(id) {
        return $("[id$=" + id + "]");
    }
});

$.extend({
    addCommas: function(nStr) {
        nStr += '';
        x = nStr.split('.');
        x1 = x[0];
        x2 = x.length > 1 ? '.' + x[1] : '';
        var rgx = /(\d+)(\d{3})/;
        while (rgx.test(x1)) {
            x1 = x1.replace(rgx, '$1' + ',' + '$2');
        }
        return x1 + x2;
    }
});

$.fn.centerInClient = function(options) {
    /// <summary>Centers the selected items in the browser window. Takes into account scroll position.
    /// Ideally the selected set should only match a single element.
    /// </summary>    
    /// <param name="fn" type="Function">Optional function called when centering is complete. Passed DOM element as parameter</param>    
    /// <param name="forceAbsolute" type="Boolean">if true forces the element to be removed from the document flow 
    ///  and attached to the body element to ensure proper absolute positioning. 
    /// Be aware that this may cause ID hierachy for CSS styles to be affected.
    /// </param>
    /// <returns type="jQuery" />
    var opt = { forceAbsolute: false,
        container: window,    // selector of element to center in
        completeHandler: null
    };
    $.extend(opt, options);

    return this.each(function(i) {
        var el = $(this);
        var jWin = $(opt.container);
        var isWin = opt.container == window;

        // force to the top of document to ENSURE that 
        // document absolute positioning is available
        if (opt.forceAbsolute) {
            if (isWin)
                el.remove().appendTo("body");
            else
                el.remove().appendTo(jWin.get(0));
        }


        // have to make absolute
        el.css("position", "absolute");

        // height is off a bit so fudge it
        var heightFudge = isWin ? 2.0 : 1.8;

        var x = (isWin ? jWin.width() : jWin.outerWidth()) / 2 - el.outerWidth() / 2;
        var y = (isWin ? jWin.height() : jWin.outerHeight()) / heightFudge - el.outerHeight() / 2;

        el.css("left", x + jWin.scrollLeft());
        el.css("top", y + jWin.scrollTop());

        // if specified make callback and pass element
        if (opt.completeHandler)
            opt.completeHandler(this);
    });
}


/*
*
* Copyright (c) 2006/2007 Sam Collett (http://www.texotela.co.uk)
* Licensed under the MIT License:
* http://www.opensource.org/licenses/mit-license.php
* 
* Version 1.0
* Demo: http://www.texotela.co.uk/code/jquery/numeric/
*
* $LastChangedDate$
* $Rev$
*/

/*
* Allows only valid characters to be entered into input boxes.
* Note: does not validate that the final text is a valid number
* (that could be done by another script, or server-side)
*
* @name     numeric
* @param    decimal      Decimal separator (e.g. '.' or ',' - default is '.')
* @param    callback     A function that runs if the number is not valid (fires onblur)
* @author   Sam Collett (http://www.texotela.co.uk)
* @example  $(".numeric").numeric();
* @example  $(".numeric").numeric(",");
* @example  $(".numeric").numeric(null, callback);
*
*/
jQuery.fn.numeric = function(decimal, callback) {
    decimal = decimal || ".";
    callback = typeof callback == "function" ? callback : function() { };
    this.keypress(
		function(e) {
		    var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
		    // allow enter/return key (only when in an input box)
		    if (key == 13 && this.nodeName.toLowerCase() == "input") {
		        return true;
		    }
		    else if (key == 13) {
		        return false;
		    }
		    var allow = false;
		    // allow Ctrl+A
		    if ((e.ctrlKey && key == 97 /* firefox */) || (e.ctrlKey && key == 65) /* opera */) return true;
		    // allow Ctrl+X (cut)
		    if ((e.ctrlKey && key == 120 /* firefox */) || (e.ctrlKey && key == 88) /* opera */) return true;
		    // allow Ctrl+C (copy)
		    if ((e.ctrlKey && key == 99 /* firefox */) || (e.ctrlKey && key == 67) /* opera */) return true;
		    // allow Ctrl+Z (undo)
		    if ((e.ctrlKey && key == 122 /* firefox */) || (e.ctrlKey && key == 90) /* opera */) return true;
		    // allow or deny Ctrl+V (paste), Shift+Ins
		    if ((e.ctrlKey && key == 118 /* firefox */) || (e.ctrlKey && key == 86) /* opera */
			|| (e.shiftKey && key == 45)) return true;
		    // if a number was not pressed
		    if (key < 48 || key > 57) {
		        /* '-' only allowed at start */
		        if (key == 45 && this.value.length == 0) return true;
		        /* only one decimal separator allowed */
		        if (key == decimal.charCodeAt(0) && this.value.indexOf(decimal) != -1) {
		            allow = false;
		        }
		        // check for other keys that have special purposes
		        if (
					key != 8 /* backspace */ &&
					key != 9 /* tab */ &&
					key != 13 /* enter */ &&
					key != 35 /* end */ &&
					key != 36 /* home */ &&
					key != 37 /* left */ &&
					key != 39 /* right */ &&
					key != 46 /* del */
				) {
		            allow = false;
		        }
		        else {
		            // for detecting special keys (listed above)
		            // IE does not support 'charCode' and ignores them in keypress anyway
		            if (typeof e.charCode != "undefined") {
		                // special keys have 'keyCode' and 'which' the same (e.g. backspace)
		                if (e.keyCode == e.which && e.which != 0) {
		                    allow = true;
		                }
		                // or keyCode != 0 and 'charCode'/'which' = 0
		                else if (e.keyCode != 0 && e.charCode == 0 && e.which == 0) {
		                    allow = true;
		                }
		            }
		        }
		        // if key pressed is the decimal and it is not already in the field
		        if (key == decimal.charCodeAt(0) && this.value.indexOf(decimal) == -1) {
		            allow = true;
		        }
		    }
		    else {
		        allow = true;
		    }
		    return allow;
		}
	)
	.blur(
		function() {
		    var val = jQuery(this).val();
		    if (val != "") {
		        var re = new RegExp("^\\d+$|\\d*" + decimal + "\\d+");
		        if (!re.exec(val)) {
		            callback.apply(this);
		        }
		    }
		}
	);
    return this;
}