Use the following code:
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
WIDTH="320" HEIGHT="240" id="loading1" ALIGN="">
bgcolor="#333399" WIDTH="320" HEIGHT="240"
NAME="loading1" ALIGN=""
TYPE="application/x-shockwave-flash"
PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer">