var lastShotNumber = 0;
var appNumber = 0;

function showFeatures(){
 	$("#features").animate({ opacity: 1 }, 400, showFeaturesDone );
	$("#version").animate({ opacity: 0 }, 400 );
	document.getElementById("features").style.display = "block"
}

function showVersion(){
 	$("#version").animate({ opacity: 1 }, 400, showVersionDone );
	$("#features").animate({ opacity: 0 }, 400 );
	document.getElementById("version").style.display = "block"
}

function showFeaturesDone(){
	document.getElementById("version").style.display = "none"
}

function showVersionDone(){
	document.getElementById("features").style.display = "none"
}

function showScreenshot(shotNumber){
	if ( shotNumber == lastShotNumber )
		{ }
	else {
 		$("#iphone-screenshots").animate({ opacity: 0, marginLeft: "30px", }, 300 )
		.animate({ marginLeft: "-30px", }, 1 )
		.animate({ backgroundPosition: "0 -" + (shotNumber*338-338) + "px", }, 1 )
		.animate({ opacity: 1, marginLeft: "0px", }, 300 )
		;

		$('.iphoneimage-selected').removeClass("iphoneimage-selected");
		document.getElementById(shotNumber).setAttribute("class", "iphoneimage" + shotNumber + " iphoneimage-selected");

		lastShotNumber = shotNumber;
	}
}

function appMenuIn(appNumber){
	$("#appmenu"+appNumber).animate({ marginTop: 0 }, 150 );
}

function appMenuOut(appNumber){
	$("#appmenu"+appNumber).animate({ marginTop: "-130px" }, 150 );
}