//
// CodaEffects.js - (C) 2007 Panic, Inc.
//
// Used to scroll our tabbed view, display our download popup, and display the giant dialog.
// Requires: Effects.js
//
// Not for redistribution.

// UPDATES
// 8/12/2008 switched default loaded section from "sites-pane" to "new-pane" -- Tim
//

// Utility functions




function findElementPos(elemFind)
{
	var elemX = 0;
	var elemY = 0;
	do {
		elemX += elemFind.offsetLeft;
		elemY += elemFind.offsetTop;
	} while ( elemFind = elemFind.offsetParent )

	return Array(elemX, elemY);
}

function cubicOut(t, b, c, d) {
	return c*((t=t/d-1)*t*t + 1) + b;
}

function sineInOut(t, b, c, d)
{
	return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
}


////////////////////



// Scroll: Setup Scrolling Stuff

var currentSection = "et-pane"; // The default loaded section on the page
var tabTag = "-tab";
var paneTag = "-pane";

// Scroll the page manually to the position of element "link", passed to us.

function ScrollSection(link, scrollArea, offset)
{

	// Store the last section, and update the current section

	if (currentSection == link) {
		return;
	}
	lastSection = currentSection;
	currentSection = link;
	
	// Change the section highlight.
	// Extract the root section name, and use that to change the background image to 'top', revealing the alt. state

    sectionTab = currentSection.split("-")[0] + tabTag;
    document.getElementById(sectionTab).className = "active";
    if (lastSection) {
	    lastTab = lastSection.split("-")[0] + tabTag;
	    document.getElementById(lastTab).className = "inactive";
	}
    
	// Get the element we want to scroll, get the position of the element to scroll to
	
	theScroll = document.getElementById(scrollArea);
	position = findElementPos(document.getElementById(link));
  
  
	// Get the position of the offset div -- the div at the far left.
	// This is the amount we compensate for when scrolling
	
	if (offset != "") {
		offsetPos = findElementPos(document.getElementById(offset));
		position[0] = position[0] - offsetPos[0];
	}

	scrollStart(theScroll, theScroll.scrollLeft, position[0], "horiz");
	
	// MOVE THE ARROW
	
	theArrow = document.getElementById('arrowContainer');	
	aPos = document.getElementById(sectionTab).offsetLeft;	
	
	if (theArrow.style.left) {
    aStart = theArrow.style.left;
  } else {
    aStart = 0;
  }
	moveArrowStart(theArrow, parseInt(aStart), parseInt(aPos - 72), 0, 0, 15 );
}

// Scroll the page using the arrows

function ScrollArrow(direction, toolbar, scrollArea, offset) {

	toolbarElem = document.getElementById(toolbar);
	toolbarNames = new Array();
    
	// Find all the <li> elements in the toolbar, and extract their id's into an array.
    
	if (toolbarElem.hasChildNodes())
	{
		var children = toolbarElem.childNodes;
		
		for (var i = 0; i < children.length; i++) 
		{		  
			if (toolbarElem.childNodes[i].tagName == "LI") {
				toolbarNames.push(toolbarElem.childNodes[i].id.split("-")[0]);
			}
			if (toolbarElem.childNodes[i].tagName == "TD") {
			  if (toolbarElem.childNodes[i].id.split("-")[0]) {
				  toolbarNames.push(toolbarElem.childNodes[i].id.split("-")[0]);
				}
			}			
		}
	}

	// Now iterate through our array of tab names, find matches, and determine where to go.

	for (var i = 0; i < toolbarNames.length; i++) {
		if (toolbarNames[i] == currentSection.split("-")[0]) {
			if (direction == "left") {
				if (i - 1 < 0) {
					gotoTab = toolbarNames[toolbarNames.length - 1];
				} else {
					gotoTab = toolbarNames[i - 1];
				}
			} else {
				if ((i + 1) > (toolbarNames.length - 1)) {
					gotoTab = toolbarNames[0];
				} else {
					gotoTab = toolbarNames[i + 1];
				}
			}
		}
	}
	
	// Go to the section name!
	
	ScrollSection(gotoTab+paneTag, scrollArea, offset);

}

//
// Animated Scroll Functions
// Scrolls are synchronous -- only one at a time.
//

var scrollanim = {time:0, begin:0, change:0.0, duration:0.0, element:null, timer:null};



function ScrollMusicList(elem, direction) {
  
  element = document.getElementById(elem);
  
  aStart = document.getElementById(elem).offsetTop;	
	
	if (direction == 'down') {    
    end = aStart - document.getElementById('musicContainer').offsetHeight;
    MM_swapImage('music-up','','homeinc/images/arrow-Up.png',1)
    if (end <= 0 - element.offsetHeight + document.getElementById('musicContainer').offsetHeight) {
      end = 0 - element.offsetHeight + document.getElementById('musicContainer').offsetHeight;
      MM_swapImage('music-dn','','homeinc/images/arrow-blank.gif',1)
    } else {
      MM_swapImage('music-dn','','homeinc/images/arrow-Down.png',1)
    }
  } else {  
    end = aStart + document.getElementById('musicContainer').offsetHeight;
    MM_swapImage('music-dn','','homeinc/images/arrow-Down.png',1)
    if (end >= 0) {
      end = 0;
      MM_swapImage('music-up','','homeinc/images/arrow-blank.gif',1)
    } else {
      MM_swapImage('music-up','','homeinc/images/arrow-Up.png',1)
    }
      
  }
  
  moveArrowStart(element, 0, 0, parseInt(aStart), parseInt(end), 15 );
	
	
	
}


function scrollStart(elem, start, end, direction)
{
	//console.log("scrollStart from "+start+" to "+end+" in direction "+direction);

	if (scrollanim.timer != null) {
		clearInterval(scrollanim.timer);
		scrollanim.timer = null;
	}
	scrollanim.time = 0;
	scrollanim.begin = start;
	scrollanim.change = end - start;
	scrollanim.duration = 25;
	scrollanim.element = elem;
	
	if (direction == "horiz") {
		scrollanim.timer = setInterval("scrollHorizAnim();", 15);
	}
	else {
		scrollanim.timer = setInterval("scrollVertAnim();", 15);
	}
}

function scrollVertAnim()
{
	if (scrollanim.time > scrollanim.duration) {
		clearInterval(scrollanim.timer);
		scrollanim.timer = null;
	}
	else {
		move = sineInOut(scrollanim.time, scrollanim.begin, scrollanim.change, scrollanim.duration);
		scrollanim.element.scrollTop = move; 
		scrollanim.time++;
	}
}

function scrollHorizAnim()
{
	if (scrollanim.time > scrollanim.duration) {
		clearInterval(scrollanim.timer);
		scrollanim.timer = null;
	}
	else {
		move = sineInOut(scrollanim.time, scrollanim.begin, scrollanim.change, scrollanim.duration);
		scrollanim.element.scrollLeft = move;
		scrollanim.time++;
	}
}

//
// LARGE POPUP: Full-Screen Pop-up Functions
//

function showLargePopup(elem) {

    var popFullscreen = document.getElementById('fullscreen');
    var popLarge = document.getElementById('largepopup');

	// Put the correct content in the pop-up

	//if (navigator.platform.indexOf('Mac') != -1) {
	//	document.getElementById('start-download').className = 'show';
	//	document.getElementById('wrong-os').className = 'hide';
	//} else {
	//	document.getElementById('start-download').className = 'hide';
	//	document.getElementById('wrong-os').className = 'show';
	//}
 
 	document.getElementById('start-download').className = 'show';
	// document.getElementById('wrong-os').className = 'hide';
    
    // Make fullscreen thing really full screen, and show it
    getSize();
    popFullscreen.style.height = myScrollHeight + 'px';
    popFullscreen.style.display = 'block';
	
    // Position pop-up
    popLarge.style.left = ((myWidth - popLarge.offsetWidth) / 2) + 'px';
    popLarge.style.top = (((myHeight - popLarge.offsetHeight) / 2) + myScroll) + 'px';
    popLarge.style.visibility = 'visible';
    
    refreshTimer = setTimeout("setLocation('"+elem.getAttribute("href")+"')", 1500);

}

function setLocation(loc) {
	window.location = loc;
}

function hideLargePopup() {
    var popFullscreen = document.getElementById('fullscreen');
    var popLarge = document.getElementById('largepopup');
    
    popLarge.style.visibility = 'hidden';
    popFullscreen.style.display = 'none';
}

//
// DOWNLOAD SMALL POPUP: Download Hint Pop-up Functions
//
// An advantage of using a timer to do a hide is that we can ignore
// any spurious mouseOut events that have bubbled up, into <td>'s, etc.

var dpopTimer = "";

function showDownloadPopup(e) {
	var popDownload = document.getElementById('dpop');
	var btnDownload = document.getElementById('download');

	if (moveanim.timer != null) {
		clearInterval(moveanim.timer);
		moveanim.timer = null;
	}

	// Determine where we should pop up in relation to the download button

	position = findElementPos(btnDownload);
	popDownload.style.top = (position[1] - (popDownload.offsetHeight - 40)) +"px";
	popDownload.style.left = "5" + "px";

	// If already trigger a rollover, cancel it because we're back in

	if (dpopTimer != "")
	{
		clearTimeout(dpopTimer);
		dpopTimer = "";
	} else {
		setOpacity(0, 'dpop');
		popDownload.style.visibility = 'visible';
		moveStart(popDownload, parseInt(popDownload.style.left), parseInt(popDownload.style.left), parseInt(popDownload.style.top) + 10, parseInt(popDownload.style.top), 15);
		fadeElementSetup('dpop', 0, 100, 13);
	}
}

function hideDownloadPopup() {
	// Start timer to hide the pop-up and the overlay
	dpopTimer = setTimeout("actuallyHide()", 500);
}

function actuallyHide() {
	var popDownload = document.getElementById('dpop');
	if (dpopTimer != "")
	{
		dpopTimer = "";
		moveStart(popDownload, parseInt(popDownload.style.left), parseInt(popDownload.style.left), parseInt(popDownload.style.top), parseInt(popDownload.style.top) - 10, 15);		
		fadeElementSetup('dpop', 100, 0, 13, 1);
	}
}

//
// MOVE: Animate the move of an element.
//
// Move is also synchronous. One at a time, please.
//

var moveanim = {time:0, beginX:0, changeX:0.0, beginY:0, changeY:0, duration:0.0, element:null, timer:null};
var movearrow = {time:0, beginX:0, changeX:0.0, beginY:0, changeY:0, duration:0.0, element:null, timer:null};

function moveStart(elem, startX, endX, startY, endY, duration)
{
	if (moveanim.timer != null) {
		clearInterval(moveanim.timer);
		moveanim.timer = null;
	}
	moveanim.time = 0;
	moveanim.beginX = startX;
	moveanim.changeX = endX - startX;
	moveanim.beginY = startY;
	moveanim.changeY = endY - startY;
	moveanim.duration = duration;
	moveanim.element = elem;

	moveanim.timer = setInterval("moveAnimDo();", 15);
}

function moveArrowStart(elem, startX, endX, startY, endY, duration)
{
	if (movearrow.timer != null) {
		clearInterval(movearrow.timer);
		movearrow.timer = null;
	}
	movearrow.time = 0;
	movearrow.beginX = startX;
	movearrow.changeX = endX - startX;
	movearrow.beginY = startY;
	movearrow.changeY = endY - startY;
	movearrow.duration = duration;
	movearrow.element = elem;
	movearrow.timer = setInterval("moveArrowDo();", 15);
}

function moveAnimDo()
{
	if (moveanim.time > moveanim.duration) {
		clearInterval(moveanim.timer);
		moveanim.timer = null;
	}
	else {
		moveX = cubicOut(moveanim.time, moveanim.beginX, moveanim.changeX, moveanim.duration);
		moveY = cubicOut(moveanim.time, moveanim.beginY, moveanim.changeY, moveanim.duration);
		moveanim.element.style.left = moveX + "px";
		moveanim.element.style.top = moveY + "px";
		moveanim.time++;
	}
}

function moveArrowDo()
{
	if (movearrow.time > movearrow.duration) {
		clearInterval(movearrow.timer);
		movearrow.timer = null;
	}
	else {
		moveX = cubicOut(movearrow.time, movearrow.beginX, movearrow.changeX, movearrow.duration);
		moveY = cubicOut(movearrow.time, movearrow.beginY, movearrow.changeY, movearrow.duration);
		movearrow.element.style.left = moveX + "px";
		movearrow.element.style.top = moveY + "px";
		movearrow.time++;
	}
}
//console.log("Initialized");


function closePopup()  
 {  
     var DivWidth = parseInt(document.getElementById("divSignin").offsetWidth,10)  
     var DivHeight = parseInt(document.getElementById("divSignin").offsetHeight,10)  
     
     top = parseInt(document.getElementById('frame').offsetTop + 40);
     
     moveArrowStart(document.getElementById("divSignin"), parseInt((document.body.offsetWidth / 2) - (DivWidth / 2)), -600, top, top, 25 );
     
     
     //document.getElementById("divSignin").style.display="none";      
        objDiv = document.getElementById("divg");  
        objDiv.style.display = "none";   
        return false;  
 }  
function showPopup()  
{  
   try  
   {    
       document.getElementById("divSignin").style.display="block";      
       objDiv = document.getElementById("divg");  
          objDiv.style.display = "block";   
          objDiv.style.width = document.body.scrollWidth;  
          objDiv.style.height= document.body.scrollHeight;           
          fnSetDivSigninLeft("divSignin");        
   }  
   catch(e)  
   {  
       alert(e);  
   }  
   return false     
}  
function fnSetDivSigninLeft(oElement)  
  {  
     var DivWidth = parseInt(document.getElementById(oElement).offsetWidth,10)  
     var DivHeight = parseInt(document.getElementById(oElement).offsetHeight,10)  
       
     document.getElementById(oElement).style.top = parseInt(document.getElementById('frame').offsetTop + 40);
     
     top = parseInt(document.getElementById('frame').offsetTop + 40);
     
     moveArrowStart(document.getElementById(oElement), parseInt(document.body.offsetWidth), parseInt((document.body.offsetWidth / 2) - (DivWidth / 2)), top, top, 25 );
     
     //parseInt(document.getElementById('frame').style.offsetTop) 
     
     //(document.body.offsetHeight / 2) -  ( DivHeight / 2);  
     
     return false;       
  }