function changeFlashSource(href) {
	
	if (document.getElementById( "flash_movie" )) {
		// find the box
		var flash_box = document.getElementById( "flash_box" );
		
		// find the embedded element
		var embed = document.getElementById( "flash_movie" );
		
		// remove the embedded element
		flash_box.removeChild( embed );
	}
	
	// create the embed element
	var embed = document.createElement( "EMBED" );
	
	// set its attributes
	embed.setAttribute( "src", href );
	embed.setAttribute( "quality", "autolow" );
	embed.setAttribute( "loop", "false" );
	embed.setAttribute( "autoplay", "true" );
	embed.setAttribute( "pluginspage", "http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" );
	embed.setAttribute( "type", "application/x-shockwave-flash" );
	embed.setAttribute( "width", "340" );
	embed.setAttribute( "height", "255" );
	embed.setAttribute( "id", "flash_movie" );
	
	// display it somwhere
	var flash_box = document.getElementById( "flash_box" );
	flash_box.appendChild( embed );
}