resize element to screen resolution (with jQuery)

resize_to_screen.js

function resize(oran){
	var newH = parseFloat( $(window).height() );
	var newW = parseFloat( $(window).width() );
	var rat	 = newW / newH;
	
	if(rat > oran) 
	{
		var targetHeight 	= newH;
		var targetWidth 	= newH * oran;
	} 
	else 
	{
		var targetWidth 	= newW;
		var targetHeight 	= newW / oran;
	}
	
	var targetTop 	= (newH - targetHeight) / 2;
	var targetLeft 	= (newW - targetWidth) / 2;
	
	return {width: targetWidth, height: targetHeigt, top: targetTop, left: targetLeft};
}

// Usage:

var props = resize(4/3);

$("#myDiv").css(props);