// JavaScript Document

function addLoadListener(fn)
{
	if (typeof window.addEventListener != 'undefined')
	{
		window.addEventListener('load', fn, false);
	}
	else if (typeof document.addEventListener != 'undefined')
	{
		document.addEventListener('load', fn, false);
	}
	else if (typeof window.attachEvent != 'undefined')
	{
		window.attachEvent('onload', fn);
	}
	else
	{
		var oldfn = window.onload;
		if (typeof window.onload != 'function')
		{
			window.onload = fn;
		}
		else
		{
			window.onload = function()
			{
				oldfn();
				fn();
			};
		}
	}
}


//----------------------------------------


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// The following code added to Dreamweaver's code

// Comma separated list of images to rotate 
var imgs = new Array(
		'images/businessPhoto.jpg',
		'images/transPhoto.jpg',
		'images/weldPhoto.jpg',
		'images/edPhoto.jpg',
		'images/autoPhoto.jpg');

// delay in milliseconds between image swaps 1000 = 1 second 
var delay = 10000;
var counter = 0;

function preloadImgs(){
  for(var i=0;i<imgs.length;i++){
    MM_preloadImages(imgs[i]);
  }
}

function randomImages(){
  if(counter == (imgs.length)){
    counter = 0;
  }
  MM_swapImage('rotator', '', imgs[counter++]);
  setTimeout('randomImages()', delay);
}



//----------------------------------------


function retrieveComputedStyle(element, styleProperty) {
	var computedStyle = null;
	if (typeof element.currentStyle != "undefined") {
		computedStyle = element.currentStyle;
	} else {
		computedStyle = document.defaultView.getComputedStyle(element, null);
	}
	return computedStyle[styleProperty];
}

function moveObject(target, destinationLeft, destinationTop, maxSpeed) {
	var currentLeft = parseInt(retrieveComputedStyle(target, "left"));
	var currentTop = parseInt(retrieveComputedStyle(target, "top"));
	
	if (isNaN(currentLeft)) {
		currentLeft = 0;
	}
	if (isNaN(currentTop)) {
		currentTop = 0;
	}
	if (currentLeft < destinationLeft) {
		currentLeft += maxSpeed;
		if (currentLeft > destinationLeft) {
			currentLeft = destinationLeft;
		}
	} else {
		currentLeft -= maxSpeed;
		if (currentLeft < destinationLeft) {
			currentLeft = destinationLeft;
		}
	}
		if (currentTop < destinationTop) {
		currentTop += maxSpeed;
		if (currentTop > destinationTop) {
			currentTop = destinationTop;
		}
	} else {
		currentTop -= maxSpeed;
		if (currentTop < destinationTop) {
			currentTop = destinationTop;
		}
	}
	
	target.style.left = currentLeft + "px";
	target.style.top = currentTop + "px";
	
	if (currentLeft == destinationLeft && currentTop == destinationTop) {
		clearInterval(target.animationTimer);
	}
}





function setDefault() {
	tab1 = document.getElementById('bar1');
	tab2 = document.getElementById('bar2');
	tab3 = document.getElementById('bar3');
	tab4 = document.getElementById('bar4');
	box1 = document.getElementById('content1');
	box2 = document.getElementById('content2');
	box3 = document.getElementById('content3');
	box4 = document.getElementById('content4');
		
	boxesOff();
	
	tab1.animationTimer = setInterval(function() {moveObject(tab1, 0, 0, 75)}, 25);
	tab2.animationTimer = setInterval(function() {moveObject(tab2, 0, 20, 75)}, 25);
	tab3.animationTimer = setInterval(function() {moveObject(tab3, 0, 20, 75)}, 25);	
	tab4.animationTimer = setInterval(function() {moveObject(tab4, 0, 20, 75)}, 25);
	
	box1.style.display = "inline";
	

}


function state2() {
	tab1 = document.getElementById('bar1');
	tab2 = document.getElementById('bar2');
	tab3 = document.getElementById('bar3');
	tab4 = document.getElementById('bar4');
	box1 = document.getElementById('content1');
	box2 = document.getElementById('content2');
	box3 = document.getElementById('content3');
	box4 = document.getElementById('content4');
	
	boxesOff();
	
	tab1.animationTimer = setInterval(function() {moveObject(tab1, 0, 0, 75)}, 50);
	tab2.animationTimer = setInterval(function() {moveObject(tab2, 0, 0, 75)}, 50);
	tab3.animationTimer = setInterval(function() {moveObject(tab3, 0, 20, 75)}, 50);
	tab4.animationTimer = setInterval(function() {moveObject(tab4, 0, 20, 75)}, 50);
	
	box2.style.display = "inline";	
}

function state3() {
	tab1 = document.getElementById('bar1');
	tab2 = document.getElementById('bar2');
	tab3 = document.getElementById('bar3');
	tab4 = document.getElementById('bar4');
	box1 = document.getElementById('content1');
	box2 = document.getElementById('content2');
	box3 = document.getElementById('content3');
	box4 = document.getElementById('content4');
	
	boxesOff();
	
	tab1.animationTimer = setInterval(function() {moveObject(tab1, 0, 0, 75)}, 50);
	tab2.animationTimer = setInterval(function() {moveObject(tab2, 0, 0, 75)}, 50);
	tab3.animationTimer = setInterval(function() {moveObject(tab3, 0, 0, 75)}, 50);
	tab4.animationTimer = setInterval(function() {moveObject(tab4, 0, 20, 75)}, 50);
	
	box3.style.display = "inline";	
}

function state4() {
	tab1 = document.getElementById('bar1');
	tab2 = document.getElementById('bar2');
	tab3 = document.getElementById('bar3');
	tab4 = document.getElementById('bar4');
	box1 = document.getElementById('content1');
	box2 = document.getElementById('content2');
	box3 = document.getElementById('content3');
	box4 = document.getElementById('content4');
	
	boxesOff();
	
	tab1.animationTimer = setInterval(function() {moveObject(tab1, 0, 0, 75)}, 50);
	tab2.animationTimer = setInterval(function() {moveObject(tab2, 0, 0, 75)}, 50);
	tab3.animationTimer = setInterval(function() {moveObject(tab3, 0, 0, 75)}, 50);
	tab4.animationTimer = setInterval(function() {moveObject(tab4, 0, 0, 75)}, 50);
	
	box4.style.display = "inline";	
}

function boxesOff() {
	box1.style.display = "none";
	box2.style.display = "none";	
	box3.style.display = "none";		
	box4.style.display = "none";	
}


addLoadListener(setDefault);
addLoadListener(preloadImgs);
addLoadListener(randomImages);