// JavaScript Document
function changeImg(mypic){
    var div = mypic.parentNode;
	var xw=div.clientWidth;
    var xl=div.clientHeight;

    var width = mypic.width;
    var height = mypic.height;
                    
    if (width!=xw ) mypic.width = xw;
    if (height!=xl ) mypic.height = xl;
}