var imgNode = null;

function popImg(filepath,e){

    closeImage();

    if(document.all){
        var y = event.y - 20;
        y = y + document.body.scrollTop;
        
        if (!imgNode){
            imgNode = document.createElement("img");
            imgNode.setAttribute( "src" , filepath );
            imgNode.onclick = closeImage;
        }
    }
    else if(document.implementation){
        var y = e - 20;
        if(!imgNode){
            imgNode = document.createElement("img");
            imgNode.setAttribute( "src" , filepath );
            imgNode.addEventListener("click" ,closeImage , true);
        }
    }
    else{
        return false;
    }
    imgNode.style.position = "absolute";
    imgNode.style.right = "150px";
    imgNode.style.top = y + "px";
    imgNode.style.borderColor = "blue";
    imgNode.style.borderWidth = "2px";
    imgNode.style.borderStyle = "solid";
    imgNode.style.margin = "0";
    document.body.appendChild(imgNode);

}

function closeImage(){
    if(imgNode){
        document.body.removeChild(imgNode);
        imgNode = null;
    }
}