//change the opacity for different browsers
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 + ")";
}
function loadMyImg(img, dir, s, n){
  document.getElementById('mainimage').innerHTML="<img onclick='loadNextImg(\""+dir+"\", \""+s+"\", "+n+"); opacity(\"mainimage\", 0, 100, 1500);' class='c auto' alt='' id='b"+img+"' src='images/"+dir+"/"+s+"/"+img+".jpg'>";
}