jQuery.extend({
	get_window_sizes: function()
	{
		var iebody = (document.compatMode && document.compatMode != 'BackCompat') ? document.documentElement : document.body;
		return {
			'offset_x'   : iebody.scrollLeft ? iebody.scrollLeft : (self.pageXOffset ? self.pageXOffset : 0),
			'offset_y'   : iebody.scrollTop  ? iebody.scrollTop : (self.pageYOffset ? self.pageYOffset : 0),
			'view_height': self.innerHeight ? self.innerHeight : iebody.clientHeight,
			'view_width' : self.innerWidth ? self.innerWidth : iebody.clientWidth,
			'height'     : iebody.scrollHeight ? iebody.scrollHeight : window.height,
			'width'      : iebody.scrollWidth ? iebody.scrollWidth : window.width
		}
	},

	disable_elms: function(ids, flag)
	{
		$('#' + ids.join(',#')).attr('disabled', (flag == true) ? 'disabled' : '');
	},

	ua: {
		version: (navigator.userAgent.match( /.+(?:it|ra|ie|ox|on)[\/: ]([\d.]+)/i ) || [])[1],
		browser: (jQuery.browser.safari ? 'Safari' : (jQuery.browser.opera ? 'Opera' : (jQuery.browser.msie ? 'Internet Explorer' : 'Firefox'))),
		os: (navigator.platform.toLowerCase().indexOf('mac') != -1 ? 'MacOS' : (navigator.platform.toLowerCase().indexOf('win') != -1 ? 'Windows' : 'Linux')),
		language: (navigator.language ? navigator.language : (navigator.browserLanguage ? navigator.browserLanguage : (navigator.userLanguage ? navigator.userLanguage : (navigator.systemLanguage ? navigator.systemLanguage : ''))))
	}
});