// JavaScript Document
window.onload = initPage;

var landscapePix = new Array("landscape/TomCombineNoLightForeGround.jpg","landscape/basinVert.jpg","landscape/TomBasinPanorama.jpg","landscape/MonoLakeVert.jpg","landscape/MonoAfterSunset.jpg","landscape/loneRockMonoLake.jpg","landscape/RuddyDuck.jpg","landscape/three_wave.jpg","landscape/entrance_wave.jpg","landscape/aboveWallStreet.jpg","landscape/brain_rock.jpg","landscape/moabDawn.jpg","landscape/splotchWave.jpg","landscape/dandilion2.jpg","landscape/whtFlower.jpg","landscape/poppiRed2.jpg","landscape/ClematisNeiliMoser.jpg","landscape/KeswickWater.jpg","landscape/bwaspens.jpg","landscape/LCC_Gate.jpg","landscape/threeTrees.jpg","landscape/FrozenLake2.jpg","landscape/startrail.jpg","landscape/stumpWorked.jpg","landscape/NightLiteThistle.jpg","landscape/Zion_HueSat_HDR2.jpg","landscape/Zion_Waterfall_Panorama.jpg");

var sportPix = new Array("sport/TomGreenWall.jpg","sport/j_lemon2.jpg","sport/Jaime_GoGranny.jpg","sport/mindy_bronson2.jpg","sport/Tom_Power.jpg","sport/TomBog.jpg","sport/TomPequop04.jpg","sport/huge.jpg","sport/TomWorseCase.jpg","sport/MattBirchRastaSit.jpg");

var picCount = 0;
var gallery;

function getActivatedObject(e){
	
	var obj;
	
	if (!e) {
		
		obj = window.event.srcElement;
		
	} else if (e.srcElement) {
			
		obj = e.srcElement;
			
	} else {
				
		obj = e.target;
				
	}
	
	return obj;
	
}

function initPage(){		
	
	document.getElementById('nextPic').onclick = moveOn;
	document.getElementById('backPic').onclick = goBack;
	document.getElementById('landscape').onclick = dGallery;
	document.getElementById('sport').onclick = dGallery;

}

function dGallery(e){
	
	picCount = 0;
	
	var me = getActivatedObject(e);
	
	
	testGallery = me.id;
	gallery = me.id;
	
	gallery = eval(gallery + "Pix");
	
	var photoHolder = document.getElementById('photo');
	//need an if statement to check photo src to make sure gallery doesn't flicker
	var testURL = photoHolder.src;
	
	switch (testGallery) {
	
	case 'landscape':
		var url = /(landscape\/TomCombineNoLightForeGround.jpg)$/;
		var result = testURL.match(url);
		break;
		
	case 'sport':
		var url = /(sport\/TomGreenWall.jpg)$/;
		var result = testURL.match(url);
		break;
	}
	
	  if (result == null)  {
		  
		photoHolder.style.opacity = "0.0";
		photoHolder.src = gallery[0];

	  }
	/*photoHolder.style.opacity = "0.0";
	photoHolder.src = gallery[0];*/

	document.getElementById('nextPic').style.display = "block";
	document.getElementById('backPic').style.display = "none";
		
	keepCount();
	
}
	
function moveOn() {
	
	var photoHolder = document.getElementById('photo');
	
	picCount++;
	
	if(picCount == gallery.length){
		
		picCount = 0;
				
		}
		
	photoHolder.style.opacity = "0.0";
	
	photoHolder.src = gallery[picCount];
	
	document.getElementById('backPic').style.display = "block";	
	
	keepCount();
	
	return false;
	
	}

function goBack(){
	
	var photoHolder = document.getElementById('photo');
	
		
	if(picCount == 0){
	
	picCount = gallery.length;
	
	}
		
	picCount--;	
	
	photoHolder.style.opacity = "0.0";
	photoHolder.src = gallery[picCount];
	
	keepCount();
	
	return false;
	
	}
	
function keepCount(){
	
	document.getElementById('number').innerHTML = (picCount + 1) + " / " + gallery.length;
	
	}