function MG_imageSwap(daImage, daSrc){
  var objStr,obj;
  if(document.images){
    if (typeof(daImage) == 'string') {
      objStr = 'document.' + daImage;
      obj = eval(objStr);
      obj.src = daSrc;
    } else if ((typeof(daImage) == 'object') && daImage && daImage.src) {
		daImage.src = daSrc;
    }
  }
}
function MG_preloadImg() {
	if (document.images) {
		if (typeof(document.MG) == 'undefined'){
			document.MG = new Object();
		}
		document.MG.loadedImages = new Array();
		var argLength = MG_preloadImg.arguments.length;
		for(arg=0;arg<argLength;arg++) {
			document.MG.loadedImages[arg] = new Image();
			document.MG.loadedImages[arg].src = MG_preloadImg.arguments[arg];
		}
	}
}