function getGameSize( winSize ){
	var minWidth = 1000;
	var minHeight = 570;
	var maxWidth = 1249;
	var maxHeight = 900;

	var winHeight = winSize.height;
	var winWidth = winSize.width;
	if( winHeight < minHeight ){
		winHeight = minHeight;
	}
	if( winWidth < minWidth ){
		winWidth = minWidth;
	}
	
	if( winHeight > maxHeight ){
		winHeight = maxHeight;
	}
	if( winWidth > maxWidth ){
		winWidth = maxWidth;
	}

	return {width:winWidth,height:winHeight};
}

function getWinSize(){
	var winWidth = 0;
	var winHeight = 0;
	
	if (window.innerWidth){
		winWidth = window.innerWidth;
	}else if ((document.body) && (document.body.clientWidth)){
		winWidth = document.body.clientWidth;
	}

	if (window.innerHeight){
		winHeight = window.innerHeight;
	}else if ((document.body) && (document.body.clientHeight)){
		winHeight = document.body.clientHeight;
	}

	if (document.documentElement && document.documentElement.clientHeight && document.documentElement.clientWidth) {
		winHeight = document.documentElement.clientHeight;
		winWidth = document.documentElement.clientWidth;
	}

	return {width:winWidth,height:winHeight};
}

function setGameSize()
{
	var winSize = getWinSize();
	var gameSize = getGameSize( winSize );
	
	var game = document.getElementById('game');
	game.height = gameSize.height;
	game.width = gameSize.width;

	clientLayer.left = ( winSize.width - gameSize.width )/ 2;
	clientLayer.top = ( winSize.height - gameSize.height )/2;

}