var JCaption = new Class({
	initialize: function(selector)
	{
		this.selector = selector;

		var images = $$(selector);
		images.each(function(image){ this.createCaption(image); }, this);
	},

	createCaption: function(element)
	{
		var caption   = document.createTextNode(element.title);
		var container = document.createElement("div");
		var text      = document.createElement("p");
		var width     = element.getAttribute("width");
		var align     = element.getAttribute("align");
		var docMode = document.documentMode;

		//Windows fix
		if (!align)
			align = element.getStyle("float");  // Rest of the world fix
		if (!align) // IE DOM Fix
			align = element.style.styleFloat;

		text.appendChild(caption);
		text.className = this.selector.replace('.', '_');

		if (align=="none") {
			if (element.title != "") {
				element.parentNode.replaceChild(text, element);
				text.parentNode.insertBefore(element, text);
			}
		} else {
			element.parentNode.insertBefore(container, element);
			container.appendChild(element);
			if ( element.title != "" ) {
				container.appendChild(text);
			}
			container.className   = this.selector.replace('.', '_');
			container.className   = container.className + " " + align;
			container.setAttribute("style","float:"+align);

			//IE8 fix
			if (!docMode|| docMode < 8) {
				container.style.width = width + "px";
			}
		}

	}
});

document.caption = null;
window.addEvent('load', function() {
	var caption = new JCaption('img.caption')
	document.caption = caption
});

// calculate the ASCII code of the given character
function CalcKeyCode(aChar) {
  var character = aChar.substring(0,1);
  var code = aChar.charCodeAt(0);
  return code;
}

function checkNumber(val) {
  var strPass = val.value;
  var strLength = strPass.length;
  var lchar = val.value.charAt((strLength) - 1);
  var cCode = CalcKeyCode(lchar);

  /* Check if the keyed in character is a number
     do you want alphabetic UPPERCASE only ?
     or lower case only just check their respective
     codes and replace the 48 and 57 */

  if (cCode < 48 || cCode > 57 ) {
    var myNumber = val.value.substring(0, (strLength) - 1);
    val.value = myNumber;
  }
  return false;
}