$(document).ready(function(){
	$('.bgted').css('display','none');
	
})

var tipped = ' ';

$(document).keyup(function (event) {
    if (event.keyCode==13)
    {
    	if (tipped==' 826970') // ref
    	{
    		$('.bgted').css('display','block');
    	}
    	tipped = ' ';
    }
    
    tipped = tipped+event.keyCode;
});