/*"This Code is subject to the terms, conditions, warranties, and disclaimers 
   of the Webmonkey Public License, Version 1.0 located at 
   http://www.hotwired.com/webmonkey/javascript/code_library/license/wpl.html. 
   Original Code is (c) 1998 Wired Digital Inc. All Rights Reserved. This Code 
   came from the Webmonkey Code Library located at 
   http://www.hotwired.com/webmonkey/javascript/code_library/. Webmonkey is a 
   registered trademark of Wired Ventures Inc. 
*/

function WM_preloadImages() {

		/*
		WM_preloadImages()
		Loads images into the browser's cache for later use.
		
		Source: Webmonkey Code Library
		(http://www.hotwired.com/webmonkey/javascript/code_library/)
		
		Author: Nadav Savio
		Author Email: nadav@wired.com
		
		Usage: WM_preloadImages('image 1 URL', 'image 2 URL', 'image 3 URL', ...);
		*/

  // Don't bother if there's no document.images
  if (document.images) {
    if (typeof(document.WM) == 'undefined'){
      document.WM = new Object();
    }
    document.WM.loadedImages = new Array();
    // Loop through all the arguments.
    var argLength = WM_preloadImages.arguments.length;
    for(arg=0;arg<argLength;arg++) {
      // For each arg, create a new image.
      document.WM.loadedImages[arg] = new Image();
      // Then set the source of that image to the current argument.
      document.WM.loadedImages[arg].src = WM_preloadImages.arguments[arg];
    }
  }
}



function WM_imageSwap(daImage, daSrc){
  var objStr,obj;
  		/*
  		  WM_imageSwap()
  		  Changes the source of an image.
		
  		  Source: Webmonkey Code Library
  		  (http://www.hotwired.com/webmonkey/javascript/code_library/)
		
  		  Author: Shvatz
  		  Author Email: shvatz@wired.com
		
  		  Usage: WM_imageSwap(originalImage, 'newSourceUrl');
		
  		  Requires: WM_preloadImages() (optional, but recommended)
  		  Thanks to Ken Sundermeyer (ksundermeyer@macromedia.com) for his help
  		  with variables in ie3 for the mac. 
  		  */

  // Check to make sure that images are supported in the DOM.
  if(document.images){
    // Check to see whether you are using a name, number, or object
    if (typeof(daImage) == 'string') {
      // This whole objStr nonesense is here solely to gain compatability
      // with ie3 for the mac.
      objStr = 'document.' + daImage;
      obj = eval(objStr);
      obj.src = daSrc;
    } else if ((typeof(daImage) == 'object') && daImage && daImage.src) {
      daImage.src = daSrc;
    }
  }
}