var selectedObj;
var offsetX, offsetY;
var xer = -510;
var yer = 174;
var myTimer;
var mutex = 0;
var dir = 1; //out = 0, in = 1
var mypic;

function getPos() {
  if (mutex == 0) {
    mutex = 1;
    if (dir) {
    	document.getElementById("tab").src = "images/close_photo.gif";
    	slide(-510);
    	dir = 0;
    }
    else {
    	document.getElementById("tab").src = "images/view_photo.gif";
    	slide2(0);
    	dir = 1;
    }
  }
}

function slide(num) {
    if (xer < 0) {
	   xer = xer + 30;
      if (xer > 0) xer = 0;
	  shiftTo(mypic, xer, yer);
      myTimer = setTimeout("slide(" + num + ")",20);
    }
    else {
	   clearTimeout(myTimer);
		mutex = 0;
	 }
}

function slide2(num) {
    if (xer > -510) {
	   xer = xer - 30;
      if (xer < -510) xer = -510;
	  shiftTo(mypic, xer, yer);
      myTimer = setTimeout("slide2(" + num + ")",20);
    }
    else {
	   clearTimeout(myTimer);
		mutex = 0;
	 }
}

function shiftTo(obj, x, y) {
    obj.style.left = x + "px";
    obj.style.top = y + "px";
}

/*
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php*/


function initRollovers() {
	if (!document.getElementById || !window.innerHeight) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}


function init() {
	mypic = document.getElementById("photo");
	initRollovers();
}