/*

Author: mg12

Update: 2008/11/21

Author URI: http://www.neoease.com/

*/

(function() {



function $(id) {

	return document.getElementById(id);

}



function setStyleDisplay(id, status) {

	$(id).style.display = status;

}



function goTop(acceleration, time) {

	acceleration = acceleration || 0.1;

	time = time || 16;



	var dx = 0;

	var dy = 0;

	var bx = 0;

	var by = 0;

	var wx = 0;

	var wy = 0;



	if (document.documentElement) {

		dx = document.documentElement.scrollLeft || 0;

		dy = document.documentElement.scrollTop || 0;

	}

	if (document.body) {

		bx = document.body.scrollLeft || 0;

		by = document.body.scrollTop || 0;

	}

	var wx = window.scrollX || 0;

	var wy = window.scrollY || 0;



	var x = Math.max(wx, Math.max(bx, dx));

	var y = Math.max(wy, Math.max(by, dy));



	var speed = 1 + acceleration;

	window.scrollTo(Math.floor(x / speed), Math.floor(y / speed));

	if(x > 0 || y > 0) {

		var invokeFunction = "MGJS.goTop(" + acceleration + ", " + time + ")"

		window.setTimeout(invokeFunction, time);

	}

}



function switchTab(showPanels, hidePanels, activeTab, activeClass, fadeTab, fadeClass) {

	$(activeTab).className = activeClass;

	$(fadeTab).className = fadeClass;



	var panel, panelList;

	panelList = showPanels.split(',');

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

		var panel = panelList[i];

		if ($(panel)) {

			setStyleDisplay(panel, 'block');

		}

	}

	panelList = hidePanels.split(',');

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

		panel = panelList[i];

		if ($(panel)) {

			setStyleDisplay(panel, 'none');

		}

	}

}



function loadCommentShortcut() {

	$('comment').onkeydown = function (moz_ev) {

		var ev = null;

		if (window.event){

			ev = window.event;

		} else {

			ev = moz_ev;

		}

		if (ev != null && ev.ctrlKey && ev.keyCode == 13) {

			$('submit').click();

		}

	}

	$('submit').value += ' (Ctrl+Enter)';

}



window['MGJS'] = {};

window['MGJS']['$'] = $;

window['MGJS']['setStyleDisplay'] = setStyleDisplay;

window['MGJS']['goTop'] = goTop;

window['MGJS']['switchTab'] = switchTab;

window['MGJS']['loadCommentShortcut'] = loadCommentShortcut;



})();



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