function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function captionWidth () {
	var hasPicture;
	var pictureClass = getElementsByClass("pict");
	if(pictureClass) {
		for (i=0;i<pictureClass.length;i++) {
			var picture = pictureClass[i].getElementsByTagName("img");
			hasPicture = picture[0].getAttribute("width");
			if (hasPicture) {
				pictureWidth = picture[0].getAttribute("width");
				pictureClass[i].style.width = pictureWidth+"px";
			}
		}		
	}
}

addLoadEvent(captionWidth);