var viewWid;
var viewHei;
var MIN_WID = 690;
var MAX_HEI = 468;

function updateWidthHeight(){
	$("#wrapper").hide();
	viewWid = $(window).width();
	if( viewWid < MIN_WID ){
		viewWid = MIN_WID;
	}
  viewHei = $(window).height();
	if( viewHei < MAX_HEI ){
		viewHei = MAX_HEI;
	}	
	$("#wrapper").show();
}