function CenterItem(theItem){
	var winWidth=$(window).width();
	var winHeight=$(window).height();
	var windowCenter=winWidth/2;
	var itemCenter=$(theItem).width()/2;
	var theCenter=windowCenter-itemCenter;
	var windowMiddle=winHeight/2;
	var itemMiddle=$(theItem).height()/2;
	var theMiddle=windowMiddle-itemMiddle;
	if(winWidth>$(theItem).width()){ //horizontal
		$(theItem).css('left',theCenter);
	} else {
		$(theItem).css('left','0');
	}
	if(winHeight>$(theItem).height()){ //vertical
		$(theItem).css('top',theMiddle);
	} else {
		$(theItem).css('top','0');
	}
}
$(document).ready(function() {
	CenterItem('.centered');
});
$(window).resize(function() {
	CenterItem('.centered');
});