// IMAGE ROLLOVER

if(document.images) {

pj_nav_author_on = new Image;
pj_nav_author_off = new Image;
pj_nav_books_on = new Image;
pj_nav_books_off = new Image;
pj_nav_features_on = new Image;
pj_nav_features_off = new Image;
pj_nav_gods_on = new Image;
pj_nav_gods_off = new Image;
pj_nav_fun_on = new Image;
pj_nav_fun_off = new Image;
pj_nav_events_on = new Image;
pj_nav_events_off = new Image;
pj_nav_downloads_on = new Image;
pj_nav_downloads_off = new Image;
pj_nav_maps_on = new Image;
pj_nav_maps_off = new Image;

pj_nav_author_on.src = "../img/pj_nav_author_on.gif";
pj_nav_author_off.src = "../img/pj_nav_author_off.gif";
pj_nav_books_on.src = "../img/pj_nav_books_on.gif";
pj_nav_books_off.src = "../img/pj_nav_books_off.gif";
pj_nav_features_on.src = "../img/pj_nav_features_on.gif";
pj_nav_features_off.src = "../img/pj_nav_features_off.gif";
pj_nav_gods_on.src = "../img/pj_nav_gods_on.gif";
pj_nav_gods_off.src = "../img/pj_nav_gods_off.gif";
pj_nav_fun_on.src = "../img/pj_nav_fun_on.gif";
pj_nav_fun_off.src = "../img/pj_nav_fun_off.gif";
pj_nav_events_on.src = "../img/pj_nav_events_on.gif";
pj_nav_events_off.src = "../img/pj_nav_events_off.gif";
pj_nav_downloads_on.src = "../img/pj_nav_downloads_on.gif";
pj_nav_downloads_off.src = "../img/pj_nav_downloads_off.gif";
pj_nav_maps_on.src = "../img/pj_nav_maps_on.gif";
pj_nav_maps_off.src = "../img/pj_nav_maps_off.gif";

}

function swapImage(f,n) {
  f = "document."+f;
  f = eval(f);
  n = eval(n);
  f.src = n.src;
}

var current_layer;
current_layer=null;

function showHideLayer_2(t) {
  if(document.getElementById) {
    layer_object = document.getElementById(t).style;
  } else {
    if(document.all) {
      layer_object = eval('document.all.'+t+'.style');
    }
  }
  layer_object.visibility = "visible";
  if(current_layer && (current_layer !== layer_object)) {
    current_layer.visibility = "hidden";
  }
  current_layer = layer_object;
}

function showHideLayer(t, v) {
  if(document.getElementById) {
    layer_object = document.getElementById(t).style;
  } else {
    if(document.all) {
      layer_object = eval('document.all.'+t+'.style');
    }
  }
  if(v == "visible") {
    layer_object.visibility = "visible";
  } else {
    layer_object.visibility = "hidden";
  }
}

// DISPLAY THE DATE 

weekDayName = new Array ("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")

function printDate() {



 //  document.write("" + weekDayName[today.getDay()]+ " " + monthName[today.getMonth()] + " " + today.getDate()+ ", " + today.getYear()+ "")

		update = new Date() 

		var months = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
        var weekDayName = new Array ("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")
		var now = new Date();
		var monthName = months[update.getMonth()];
        var dayName = weekDayName[update.getDay()];
		var date = update.getDate();
		var year = update.getYear();
		
		if (year < 100)
			year = year + 2000;
		else if (year < 2000)
			year = year + 1900;
		
		document.write(dayName + "&nbsp;" + monthName + "&nbsp;" + date + ",&nbsp;" + year);

}


// CHECK REQUIRED FIELDS FOR NEWSLETTER FORM

function submitformsignup() {
	if (document.PercyJacksonandTheOlympians.FIRST_NAME.value=='' || document.PercyJacksonandTheOlympians.LAST_NAME.value=='' || document.PercyJacksonandTheOlympians.EMAIL.value=='' ) {
		alert("Please fill all required fields.");
	} else {
document.PercyJacksonandTheOlympians.submit();
}
}