var go = true;

$(window).bind('resize', function () {
if(go){
	var height = $(window).height();
	if(height<510){	
		$('#block').slideUp('300');
		$('#toggle_header').html("&#9679; MORE");
	}else{
		$('#block').slideDown('300');
		$('#toggle_header').html("&#9679; LESS");
	}
}


});

function updateBlockState() {
	if($("#block").is(":hidden")){
		go = true;
		$('#toggle_header').html("&#9679; LESS");
	}else{
		go = false;
		$('#toggle_header').html("&#9679; MORE");
	}
	
   $('#block').slideToggle('300');
}

$("#toggle_header").live('click', function(e) { 
    e.preventDefault; 
    return updateBlockState(); 
});