var Registry  = {
	add : function (product_id,cnt,color,callback) {
		if(callback == undefined) {
			callback = function (json) {
				return true;
			}
		}
		
		$.post(
			"/?cnt=registry&act=add"
			,"pid="+product_id+"&qnt="+cnt+"&col"+color
			, callback
			, "json");
	}
}