jQuery(document).ready(
	function() {		
		jQuery("div.portlet").fadeTo(50, 0.2);
		jQuery("div.portlet").hover(
			function() {
				jQuery(this).fadeTo(50, 0.85);
			},
			function() {
				jQuery(this).stop().fadeTo(50, 0.2);
			}
		);
		jQuery("#bg-img").children('img').css("width",getWindowWidth() + "px");
		jQuery("#bg-img").children('img').css("height",getWindowHeight() + "px");
});

jQuery(window).bind("resize", function(){
		jQuery("#bg-img").children('img').css("width",getWindowWidth() + "px");
		jQuery("#bg-img").children('img').css("height",getWindowHeight() + "px");
});

function getWindowHeight() {
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		}
		else {
			if (document.body && document.body.clientHeight) {
				windowHeight = document.body.clientHeight;
			}
		}
	}
	return windowHeight;
};
	
function getWindowWidth() {
	var windowWidth = 0;
	if (typeof(window.innerWidth) == 'number') {
		windowWidth = window.innerWidth;
	}
	else {
		if (document.documentElement && document.documentElement.clientWidth) {
			windowWidth = document.documentElement.clientWidth;
		}
		else {
			if (document.body && document.body.clientWidth) {
				windowWidth = document.body.clientWidth;
			}
		}
	}
	return windowWidth;
};