function ChangeMain(file_name,file_type,file_subtype,mm_userid,file_dim) {
	var tURL;
	tURL = "http://www.creativewilmington.com/creatives/" + mm_userid + "/" + file_type + "/" + file_name;
	document.getElementById('MLink').style.visibility = "visible";
	document.getElementById('MLink').href = tURL;

	if (file_subtype == "mp3") {
	document.getElementById('MainAreaDiv').innerHTML = "<strong>" + file_name + "</strong><br /><embed type=\"application/x-shockwave-flash\" src=\"http://www.google.com/reader/ui/3247397568-audio-player.swf?audioUrl=" + tURL + "\" width=\"300\" height=\"27\" allowscriptaccess=\"never\" quality=\"best\" wmode=\"transparent\" flashvars=\"playerMode=embedded\" />";
  	document.getElementById('MLink').style.visibility = "hidden";
	document.getElementById('MLink').rel = "vidbox 640 480";
  } else if (file_subtype == "swf") {
	document.getElementById('MainAreaDiv').innerHTML = "<strong>" + file_name + "</strong><br /><embed type=\"application/x-shockwave-flash\" src=\"" + tURL + "\" autostart=\"false\" width=\"300\" allowscriptaccess=\"never\" quality=\"best\" wmode=\"window\" flashvars=\"playerMode=embedded\" />";
  	document.getElementById('MLink').style.visibility = "visible";
	document.getElementById('MLink').rel = "vidbox 640 480";
  } else if (file_subtype == "mp4") {
    document.getElementById('MainAreaDiv').innerHTML = "<OBJECT CLASSID=\"clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B\" CODEBASE=\"http://www.apple.com/qtactivex/qtplugin.cab\" WIDTH=\"300\"><PARAM NAME=\"src\" VALUE=\"" + tURL + "\" ><PARAM NAME=\"autoplay\" VALUE=\"true\" ><EMBED SRC=\"" + tURL + "\" TYPE=\"image/x-macpaint\" PLUGINSPAGE=\"http://www.apple.com/quicktime/download\" WIDTH=\"300\" AUTOPLAY=\"true\"></EMBED></OBJECT>";
  	document.getElementById('MLink').style.visibility = "visible";
	document.getElementById('MLink').rel = "vidbox 640 480";
  } else if (file_subtype == "mov") {
    document.getElementById('MainAreaDiv').innerHTML = "<OBJECT CLASSID=\"clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B\" CODEBASE=\"http://www.apple.com/qtactivex/qtplugin.cab\" WIDTH=\"300\"><PARAM NAME=\"src\" VALUE=\"" + tURL + "\" ><PARAM NAME=\"autoplay\" VALUE=\"true\" ><EMBED SRC=\"" + tURL + "\" TYPE=\"image/x-macpaint\" PLUGINSPAGE=\"http://www.apple.com/quicktime/download\" WIDTH=\"300\" AUTOPLAY=\"true\"></EMBED></OBJECT>";
  	document.getElementById('MLink').style.visibility = "visible";
	document.getElementById('MLink').rel = "vidbox 640 480";
  } else {
	document.getElementById('MainAreaDiv').innerHTML = "<img src=\"http://www.creativewilmington.com/creatives/getimage.aspx?img=" + file_name + "&u=" + mm_userid + "&height=342&width=342\" name=\"MainImage\" id=\"MImage\" alt=\"©2009\" />";
	document.getElementById('MLink').rel = "vidbox" + file_dim;
  }
}