function UpdateDiv(Url, Capa){
	Capa = Capa||"data";
	$.ajax({
		type: 'get',
		url: Url,
		dataType: 'html',
		success: function(data){
			$("#"+Capa).html(data)
			
		}
	});
}
function isset(variable_name) {
    try {
         if (typeof(eval(variable_name)) !== 'undefined')
         if (eval(variable_name) !== null)
         return true;
     } catch(e) { }
    return false;
 }
 function save_orden(dir){
	$("input[type='checkbox']").attr('checked', true);
	
	$("form:first").attr("action", dir); 
	$("form:first").submit();
	
 }
 function reordenar(order_by, order){
	$('#order_by').val(order_by);
	$('#order').val(order);
	$("form:first").submit();
 }
function mysqlTimeStampToDate(timestamp) {
    //function parses mysql datetime string and returns javascript Date object
    //input has to be in this format: 2007-06-05 15:26:02
    var regex=/^([0-9]{2,4})-([0-1][0-9])-([0-3][0-9]) (?:([0-2][0-9]):([0-5][0-9]):([0-5][0-9]))?$/;
    var parts=timestamp.replace(regex,"$1 $2 $3 $4 $5 $6").split(' ');
    return new Date(parts[0],parts[1]-1,parts[2],parts[3],parts[4],parts[5]);
}
function goBack(){
	history.back();
	return false;
}