function IEdetect(){
  if (navigator.userAgent.toLowerCase().indexOf("msie") != -1){
    return true;
  } 
}
function opacity_IN(id,op,duration){
 e = document.getElementById(id);
 
 if(IEdetect()){
   e.style.filter='alpha(opacity='+op*10+')';
 }else{
   e.style.opacity = op/10;
 }
 op++;
 temp = duration/10;
 if(op <= 10){
  setTimeout("opacity_IN('"+id+"',"+op+","+duration+")", temp);
 }
}
function enlargeImg(elementId){
    var img = document.getElementById(elementId);
    img.style.display="block";
    opacity_IN(elementId,0,300);
 }

    


function hideImg(elementId){
    var img = document.getElementById(elementId);
    img.style.display = "none";

}