/**********************************************************************************
* phpComasy, Open Source Web Content Management System                            *
* http://www.phpcomasy.org                                                        *
*                                                                                 *
* Copyright (c) 2005 - 2011 indual	 gmbh (http://www.indual.ch)	              *
*                                                                                 *
* phpComasy is released under his own licence (http://www.phpcomasy.com/licence)  *
**********************************************************************************/
Event.observe(window, 'resize', function() {	
	resizePicture();	
});

document.observe("dom:loaded", function() {
	resizePicture();
});

function resizePicture() {
    var windowHeight = document.viewport.getHeight();
    var windowWidth = document.viewport.getWidth();	
    var ratio = 1.6; //1920x1200
           
    var imgWidth = windowHeight * ratio;
    if (imgWidth <= windowWidth) {
    	$('bg').width = windowWidth;
    	$('bg').height = (windowWidth / ratio);
    }
    else {
    	$('bg').width = imgWidth;
    	$('bg').height = windowHeight;    	
    }
}