// Display Pop-Ups
var win = '';
function popitup(winURL, ht, wid)
{
  win = window.open(winURL, "rebek", "height="+ht+",width="+wid+",scrollbars,resizable,left=0,top=0,screenX=0,screenY=0");
   if (win.opener == null) win.opener = self;
   win.focus();
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		home_down = newImage("images/home-down.gif");
		bio_over = newImage("images/bio-over.gif");
		bio_down = newImage("images/bio-down.gif");
		watercolor_over = newImage("images/watercolor-over.gif");
		watercolor_down = newImage("images/watercolor-down.gif");
		prints_over = newImage("images/prints-over.gif");
		prints_down = newImage("images/prints-down.gif");
		cards_over = newImage("images/cards-over.gif");
		cards_down = newImage("images/cards-down.gif");
		contact_over = newImage("images/contact-over.gif");
		contact_down = newImage("images/contact-down.gif");
		prt_01_over = newImage("tn/Boston-4th-over.jpg");
		prt_02_over = newImage("tn/Boston-Cheers-over.jpg");
		prt_03_over = newImage("tn/Boston-Harbor-Sail-over.jpg");
		prt_04_over = newImage("tn/Boston Lighthouse-over.jpg");
		prt_05_over = newImage("tn/Boston-Summer-Evening-over.jpg");
		prt_06_over = newImage("tn/Cape-Cod-Light-Truro-over.jpg");
		prt_07_over = newImage("tn/Copley-Square-Shower-over.jpg");
		prt_08_over = newImage("tn/Ducklings-PubGarden-over.jpg");
		prt_09_over = newImage("tn/Durgin-Park-over.jpg");
		prt_10_over = newImage("tn/Esplanade-Boathouse-over.jpg");
		prt_11_over = newImage("tn/Fenway-Park-over.jpg");
		prt_12_over = newImage("tn/Finish-Line-Boston-over.jpg");
		prt_13_over = newImage("tn/Frog-Pond-Skaters-over.jpg");
		prt_14_over = newImage("tn/Mount-Vernon-St-over.jpg");
		prt_15_over = newImage("tn/Quincy-Market-Winter-Eve-over.jpg");
		prt_16_over = newImage("tn/Skaters-at-Bridge-over.jpg");
		prt_17_over = newImage("tn/Snowfall-at-the-Bridge-over.jpg");
		prt_18_over = newImage("tn/Spring-Ducklings-over.jpg");
		prt_19_over = newImage("tn/Springtime-Walk-over.jpg");
		prt_20_over = newImage("tn/Sunset-Over-Boston-over.jpg");
		prt_21_over = newImage("tn/Townhouse-Reflections-over.jpg");
		prt_22_over = newImage("tn/Two-Swan-Boats-over.jpg");
		prt_23_over = newImage("tn/Zakim-Bridge-Moonlight-over.jpg");
		preloadFlag = true;
	}
}