// hooami username check

function lookup(username) {
	if(username.length == 0) {
		$('#error').slideUp();
		$("input[type='submit']").attr("disabled","disabled"); 
	} else {
		$.post("script/username_check.php", {queryString: ""+username+""}, function(data){
			if(data.length > 0) {
				$('#error').slideDown("slow");
				$("input[type='submit']").attr("disabled","disabled"); 
			} else {
				$('#error').slideUp();
				$("input[type='submit']").removeAttr("disabled","disabled"); 
			}
		});
	}
}