function h(v){
	if (v == undefined || v == null) return "";
	v = ""+v;
	v = v.replace(/&/g, '&');
	v = v.replace(/"/g, '"');
	v = v.replace(/</g, '&lt;');
	v = v.replace(/>/g, '&gt;');
	return v;
}


function grys_common_update_announce(message, type){
	var aelm = document.getElementById('grys_update_announce');
	if (!aelm) return;

	if (!type) type = "green";
	var div = document.createElement('DIV');
	div.className = 'grys_announce grys_announce_'+type;
	var divclose = document.createElement('DIV');
	divclose.className = "announce_closebtn";
	divclose.innerHTML = '<span class="wp-menu-image dashicons-before dashicons-no"></span>';
	div.appendChild(divclose);
	var div2 = document.createElement('DIV');
	div2.className = "announce_message";
	div2.innerHTML = message;
	div.appendChild(div2);
	
	aelm.appendChild(div);
	divclose.firstChild.addEventListener('click', function(ev){aelm.removeChild(div)});
}

function grys_formdata(f, withnulls){
	var elms = f.elements;
	var dt = {};
	for(var i = 0; i < elms.length; i++){
		if (elms[i].disabled) continue;
		if (!elms[i].name) continue;
		if (elms[i].tagName.toLowerCase() ==  "input"){
			if (elms[i].type.toLowerCase() == "radio" || elms[i].type.toLowerCase() == "checkbox"){
				if (!elms[i].checked) continue;
			}
		}
		var v = elms[i].value;
		if (!withnulls){
			if (v == "") continue;
		}
		dt[elms[i].name] = v;
	}
	return dt;
}

function grys_buildquery(dt){
	var v = "";
	for(var nm in dt){
		if (v != "") v += '&';
		v += encodeURIComponent(nm)+"="+encodeURIComponent(dt[nm]);
	}
	return v;
}


function grys_paging(cur, max, callback){
	cur = parseInt(cur);
	max = parseInt(max);
	if (max == 1) return "";
	var html = "";
	var st = 1;
	if (cur > 5) st = cur-5;
	var ed = max;
	if (cur < max-5) ed = cur+5;
	if (cur > 1){
		html += '<strong><a href="javascript:;" onclick="'+callback+'('+(cur-1)+')">←</a></strong>';
	}
	for(var i = st; i <= ed; i++){
		if (cur == i){
			html += '<strong class="current">'+i+'</strong>';
		}
		else{
			html += '<strong><a href="javascript:;" onclick="'+callback+'('+(i)+')">'+i+'</a></strong>'
		}
	}
	if (cur < max){
		html += '<strong><a href="javascript:;" onclick="'+callback+'('+(cur+1)+')">→</a></strong>';
	}
	return html;
}