var launchWin;

function Launch(section, subsection, piece) {
	var w = 810;
	var h = 660;
	var l = (screen.width-w)/2;
 	var t = (screen.height-h)/2;
	var settings = "width=" + w + ",height=" + h + ",left=" + l + ",top=" + t;
	var swfurl = "launch.cfm";
	
	if(section != null) {
		swfurl += "?section=" + section;
		if(subsection != null) {
			swfurl += "&subsection=" + subsection;
			if(piece != null) {
				swfurl += "&piece=" + piece;					
			}
		}
	}

	launchWin = window.open(swfurl, "launchWin", settings);	
	
	//section, subsection, piece
}