var initialclasses;

//addEvent() by John Resig
function addEvent( obj, type, fn ){ 
   if (obj.addEventListener){ 
      obj.addEventListener( type, fn, false );
   }
   else if (obj.attachEvent){ 
      obj["e"+type+fn] = fn; 
      obj[type+fn] = function(){ obj["e"+type+fn]( window.event ); } 
      obj.attachEvent( "on"+type, obj[type+fn] ); 
   } 
} 

//Run the startup stuff
addEvent(window, 'load', startUp);

// Check for size whenever the window is resized
addEvent(window, 'resize', checkResolution);


function startUp() {
	var body_element = document.getElementsByTagName('body')[0];
	initialclasses = body_element.className;
	checkResolution();
}

function checkResolution() {
	var body_element = document.getElementsByTagName('body')[0];
	var treshold = 1040;
	
	if  (getBrowserWidth() < treshold) {		
		body_element.className+=" SmallScreen";
	}	
	if  (getBrowserWidth() > treshold) {
		body_element.className = initialclasses;
	} 
}	
	
function getBrowserWidth() {
	if (window.innerWidth) {
		return window.innerWidth; }  
	else if (document.documentElement && document.documentElement.clientWidth != 0) {
		return document.documentElement.clientWidth; }
	else if (document.body){return document.body.clientWidth; }
		return 0; }