/**
 * Equal Heights Plugin
 * Equalize the heights of elements. Great for columns or any elements
 * that need to be the same size (floats, etc).
 * 
 * Version 1.0
 * Updated 12/10/2008
 *
 * Copyright (c) 2008 Rob Glazebrook (cssnewbie.com) 
 *
 * Usage: $(object).equalHeights([minHeight], [maxHeight]);
 * 
 * Example 1: $(".cols").equalHeights(); Sets all columns to the same height.
 * Example 2: $(".cols").equalHeights(400); Sets all cols to at least 400px tall.
 * Example 3: $(".cols").equalHeights(100,300); Cols are at least 100 but no more
 * than 300 pixels tall. Elements with too much content will gain a scrollbar.
 * 
 */

(function($) {
	$.fn.equalHeights = function(minHeight, maxHeight) {
		tallest = (minHeight) ? minHeight : 0;
		this.each(function() {
			if($(this).height() > tallest) {
				tallest = $(this).height();
			}
		});
		if((maxHeight) && tallest > maxHeight) tallest = maxHeight;
		return this.each(function() {
			$(this).height(tallest).css("overflow","auto");
		});
	}
})(jQuery);



/**
 * @author GeekTantra
 * @date 20 September 2009
 */
(function(jQuery){
    var ValidationErrors = new Array();
    jQuery.fn.validate = function(options){
        options = jQuery.extend({
            expression: "return true;",
            message: "",
            error_class: "validation_errors",
            error_field_class: "error_field",
            live: true
        }, options);
        var SelfID = jQuery(this).attr("id");
        var unix_time = new Date();
        unix_time = parseInt(unix_time.getTime() / 1000);
        if (!jQuery(this).parents('form:first').attr("id")) {
            jQuery(this).parents('form:first').attr("id", "Form_" + unix_time);
        }
        var FormID = jQuery(this).parents('form:first').attr("id");
        if (!((typeof(ValidationErrors[FormID]) == 'object') && (ValidationErrors[FormID] instanceof Array))) {
            ValidationErrors[FormID] = new Array();
        }
        if (options['live']) {
            if (jQuery(this).find('input').length > 0) {
                jQuery(this).find('input').bind('blur', function(){
                    if (validate_field("#" + SelfID, options)) {
                        if (options.callback_success) 
                            options.callback_success(this);
                    }
                    else {
                        if (options.callback_failure) 
                            options.callback_failure(this);
                    }
                });
                jQuery(this).find('input').bind('focus keypress click', function(){
                    jQuery("#" + SelfID).next('.' + options['error_class']).remove();
                    jQuery("#" + SelfID).removeClass(options['error_field_class']);
                });
            }
            else {
                jQuery(this).bind('blur', function(){
                    validate_field(this);
                });
                jQuery(this).bind('focus keypress', function(){
                    jQuery(this).next('.' + options['error_class']).fadeOut("fast", function(){
                        jQuery(this).remove();
                    });
                    jQuery(this).removeClass(options['error_field_class']);
                });
            }
        }
        jQuery(this).parents("form").submit(function(){
            if (validate_field('#' + SelfID)) 
                return true;
            else 
                return false;
        });
        function validate_field(id){
            var self = jQuery(id).attr("id");
            var expression = 'function Validate(){' + options['expression'].replace(/VAL/g, 'jQuery(\'#' + self + '\').val()') + '} Validate()';
            var validation_state = eval(expression);
            if (!validation_state) {
                if (jQuery(id).next('.' + options['error_class']).length == 0) {
                    jQuery(id).after('<span class="' + options['error_class'] + '">' + options['message'] + '</span>');
                    jQuery(id).addClass(options['error_field_class']);
                }
                if (ValidationErrors[FormID].join("|").search(id) == -1) 
                    ValidationErrors[FormID].push(id);
                return false;
            }
            else {
                for (var i = 0; i < ValidationErrors[FormID].length; i++) {
                    if (ValidationErrors[FormID][i] == id) 
                        ValidationErrors[FormID].splice(i, 1);
                }
                return true;
            }
        }
    };
    jQuery.fn.validated = function(callback){
        jQuery(this).each(function(){
            if (this.tagName == "FORM") {
                jQuery(this).submit(function(){
                    if (ValidationErrors[jQuery(this).attr("id")].length == 0) 
                        callback();
					return false;
                });
            }
        });
    };
})(jQuery);

/**
 * @author GeekTantra
 * @date 24 September 2009
 */
/*
 * This functions checks where an entered date is valid or not.
 * It also works for leap year feb 29ths.
 * @year: The Year entered in a date
 * @month: The Month entered in a date
 * @day: The Day entered in a date
 */
function isValidDate(year, month, day){
    var date = new Date(year, (month - 1), day);
    var DateYear = date.getFullYear();
    var DateMonth = date.getMonth();
    var DateDay = date.getDate();
    if (DateYear == year && DateMonth == (month - 1) && DateDay == day) 
        return true;
    else 
        return false;
}
/*
 * This function checks if there is at-least one element checked in a group of check-boxes or radio buttons.
 * @id: The ID of the check-box or radio-button group
 */
function isChecked(id){
    var ReturnVal = false;
    $("#" + id).find('input[type="radio"]').each(function(){
        if ($(this).is(":checked")) 
            ReturnVal = true;
    });
    $("#" + id).find('input[type="checkbox"]').each(function(){
        if ($(this).is(":checked")) 
            ReturnVal = true;
    });
    return ReturnVal;
}

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 * Open source under the BSD License. Copyright © 2008 George McGinley Smith All rights reserved.
*/
// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158; 
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});