var  slideno = 1;
var var_timer;

function getNextSlide(){
	   if(slideno >=6){
	     slideno = 1;
	   } else {
	     slideno++;
	   } 
       var millisec = 1000;
	   opacity('freakshow', 10, 100, millisec);
       var newImage = "url(images/pic_0" + slideno + ".jpg)";
	   document.getElementById('freakshow').style.backgroundImage =  newImage;
	  /*
	  if(document.getElementById('freakshow2').style.opacity == 20) {
	     opacity('freakshow',100, 0, millisec);
	     opacity('freakshow2', 20, 100, millisec);
		 
		 document.getElementById("center_image_index").style.zIndex="1100";
		 document.getElementById("freakshow").style.zIndex="1000";
		 document.getElementById("freakshow2").style.zIndex="1";
	     document.getElementById('freakshow2').style.backgroundImage =  newImage;
	   } else {
	     opacity('freakshow2',100, 0, millisec);
	     opacity('freakshow', 20, 100, millisec);
		 
		 document.getElementById("freakshow").style.zIndex="1";
		 document.getElementById("freakshow2").style.zIndex="1000";
		 document.getElementById("center_image_index").style.zIndex="1100";

		 document.getElementById('freakshow').style.backgroundImage =  newImage;
	     
	   }   
      */

	  var_timer = setTimeout("getNextSlide()",2000)
}

function SlideFocus(slideno){
       var millisec = 1000;
	   opacity('freakshow', 10, 100, millisec);
       var newImage = "url(images/pic_0" + slideno + ".jpg)";
	   document.getElementById('freakshow').style.backgroundImage =  newImage;
	   clearTimeout(var_timer);
} 
 

function shiftOpacity(id, millisec) {
    //if an element is invisible, make it visible, else make it ivisible
    if(document.getElementById(id).style.opacity == 0) {
        opacity(id, 0, 100, millisec);
    } else {
        opacity(id, 100, 0, millisec);
    }
} 

 
function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}