function ShowAuth(){	
	var Login = '#auth';
	var Mask = '#mask';
	
	var maskHeight = $(document).height();
	var maskWidth = $(window).width();
	
	$(Mask).css({'width':maskWidth,'height':maskHeight});
	
	$(Mask).show();	
	
	//var winH = $(window).height();
	//var winW = $(window).width();
	
	//$(Login).css('top',  winH/2-$(Login).height()/2);
	//$(Login).css('left', winW/2-$(Login).width()/2);
	
	$('select, object, embed, iframe, param').css('visibility', 'hidden');
	$(Login).show();
	
	return false;
};

function ShowWelcome(){	
	var Login = '#welcome';
	var Mask = '#mask';
	
	var maskHeight = $(document).height();
	var maskWidth = $(window).width();
	
	$(Mask).css({'width':maskWidth,'height':maskHeight});
	
	$(Mask).show();	
	
	//var winH = $(window).height();
	//var winW = $(window).width();
	
	//$(Login).css('top',  winH/2-$(Login).height()/2);
	//$(Login).css('left', winW/2-$(Login).width()/2);
	
	$('select, object, embed, iframe, param').css('visibility', 'hidden');
	$(Login).show();
	
	return false;
};
	
function CloseAuth(){
	var Login = '#auth';
	var Mask = '#mask';
	
	$(Login).hide();
	$(Mask).hide();
	
	$('select, object, embed, iframe').css('visibility', 'visible');
	
	return false;
};

function CloseWelcome(){
	var Login = '#welcome';
	var Mask = '#mask';
	
	$(Login).hide();
	$(Mask).hide();
	
	$('select, object, embed, iframe').css('visibility', 'visible');
	
	return false;
};