function popUp(myUrl,myWidth,myHeight) {
	paramStr = "";
	if(myWidth) {
		paramStr = "width=" + myWidth + ",";
	}
	if(myHeight) {
		paramStr = paramStr + "height=" + myHeight + ",";
	}

	paramStr = paramStr + "status=no,toolbar=no,menubar=no,scrollbars=yes,left=5,top=5";

	myWin = open(myUrl,"popup",paramStr);
}