function ImageSwap(daImage, daSrc)
{
	/* 	
	This function allows the source of an image to be changed dynamically,
	usually in response to some kind of an event like a mouse moving over
	the image or a mouse click on the image.
	
	Usage: ImageSwap(imagename, 'newimage.gif');
	*/
		
	var objStr, obj;
  
	if (document.images)
	{
    
		// check to see whether you are using a name, number, or object
		if (typeof(daImage) == 'string') 
		{
			// note that 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;
		}
	}
}