var $$ =
{
    focus: function(c) {
        c = $('#' + c)[0];
        try {
            c.select();
        }
        catch (e) { }

        try {
            c.focus();
        }
        catch (e) { }
    },

    nullSafe: function(target) {
        var el = $(target),
            ph = el.attr("placeholder"),
            val = el.val();

        return ph ? (val != ph && val != "") : (val != "");
    },

    disabled: function(target, disable) {
        $(target).find('input,textarea,select').each(function() {
            $(this).attr('disabled', disable);
        });
    },

    center: function(e) {
        var x = (($$.getViewPortWidth() - e[0].offsetWidth) / 2);
        var y = (($$.getViewPortHeight() - e[0].offsetHeight) / 2) + $$.getViewPortScrollY();

        $$.setLocation(e, x, y);
    },

    setLocation: function(e, x, y) {
        e.css({ position: 'absolute', left: (x + 'px'), top: (y + 'px') });
    },

    getViewPortWidth: function() {
        var width = 0;

        if ((document.documentElement) && (document.documentElement.clientWidth)) {
            width = document.documentElement.clientWidth;
        }
        else if ((document.body) && (document.body.clientWidth)) {
            width = document.body.clientWidth;
        }
        else if (window.innerWidth) {
            width = window.innerWidth;
        }

        return width;
    },

    getViewPortHeight: function() {
        var height = 0;

        if (window.innerHeight) {
            height = (window.innerHeight);
        }
        else if ((document.documentElement) && (document.documentElement.clientHeight)) {
            height = document.documentElement.clientHeight;
        }

        return height;
    },

    getContentHeight: function() {
        if (document.body) {
            if (document.body.scrollHeight) {
                return document.body.scrollHeight;
            }

            if (document.body.offsetHeight) {
                return document.body.offsetHeight;
            }
        }

        return 0;
    },

    getViewPortScrollX: function() {
        var scrollX = 0;

        if ((document.documentElement) && (document.documentElement.scrollLeft)) {
            scrollX = document.documentElement.scrollLeft;
        }
        else if ((document.body) && (document.body.scrollLeft)) {
            scrollX = document.body.scrollLeft;
        }
        else if (window.pageXOffset) {
            scrollX = window.pageXOffset;
        }
        else if (window.scrollX) {
            scrollX = window.scrollX;
        }

        return scrollX;
    },

    getViewPortScrollY: function() {
        var scrollY = 0;

        if ((document.documentElement) && (document.documentElement.scrollTop)) {
            scrollY = document.documentElement.scrollTop;
        }
        else if ((document.body) && (document.body.scrollTop)) {
            scrollY = document.body.scrollTop;
        }
        else if (window.pageYOffset) {
            scrollY = window.pageYOffset;
        }
        else if (window.scrollY) {
            scrollY = window.scrollY;
        }

        return scrollY;
    }
};

$(function(){

	function fixHA(){		
		$("#HA").css("height", $$.getContentHeight());
	}
	
	fixHA();
	$(window).resize(
		function() {
			fixHA();
		}
	);
	
});