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++;
            }
      }
}

//change the opacity for different browsers
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 + ")";
}

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

function blendimage(divid, imageid, imagefile, millisec) {
      var speed = Math.round(millisec / 100);
      var timer = 0;
      
      //set the current image as background
      document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
      
      //make image transparent
      changeOpac(0, imageid);
      
      //make new image
      document.getElementById(imageid).src = imagefile;

      //fade in image
      for(i = 0; i <= 100; i++) {
            setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
            timer++;
      }
}

function currentOpac(id, opacEnd, millisec) {
      //standard opacity is 100
      var currentOpac = 100;
      
      //if the element has an opacity set, get it
      if(document.getElementById(id).style.opacity < 100) {
            currentOpac = document.getElementById(id).style.opacity * 100;
      }

      //call for the function that changes the opacity
      opacity(id, currentOpac, opacEnd, millisec)
}


function blendimage(divid, imageid, imagefile, millisec) {
    var speed = Math.round(millisec / 900);
    var timer = 0;
     
    //set the current image as background
    document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
     
    //make image transparent
    changeOpac(0, imageid);
     
    //make new image
    document.getElementById(imageid).src = imagefile;

    //fade in image
    for(i = 0; i <= 100; i++) {
        setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
        timer++;
    }
}





// VIDEO
var ajaxdestination="";

function getdata(what,where) { // get data from source (what)
 try {
   xmlhttp = window.XMLHttpRequest?new XMLHttpRequest():
  		new ActiveXObject("Microsoft.XMLHTTP");
 }
 catch (e) { /* do nothing */ }

 document.getElementById(where).innerHTML ="<center><img src='loading.gif'></center>";
// we are defining the destination DIV id, must be stored in global variable (ajaxdestination)
 ajaxdestination=where;
 xmlhttp.onreadystatechange = triggered; // when request finished, call the function to put result to destination DIV
 xmlhttp.open("GET", what);
 xmlhttp.send(null);
  return false;
}

function triggered() { // put data returned by requested URL to selected DIV
  if (xmlhttp.readyState == 4) if (xmlhttp.status == 200) 
    document.getElementById(ajaxdestination).innerHTML =xmlhttp.responseText;
}