var stage_w;
var stage_h;

function setFullStage(w,h){
	stage_w = w;
	stage_h = h;
	window.onresize = resizewin;
	resizewin();
}
function resizewin(){
	var size = getWindowSize();
	$('main').style.width = size.w + 'px';
	$('main').style.height = size.h + 'px';
}
function getWindowSize(){
	var w;
	var h;
	if(window.innerWidth){
		w = window.innerWidth;
		h = window.innerHeight;
	}else{
		w = document.documentElement.clientWidth;
		h = document.documentElement.clientHeight;
		if(w == 0 || h == 0){
			w = document.body.clientWidth;
			h = document.body.clientHeight;
		}
	}
	if(w < stage_w) w = stage_w;
	if(h < stage_h) h = stage_h;
	return {w:w,h:h};
}