UNKNOWN {
	if: new Image(); rslt: arg; return: 
}
UNKNOWN {
	if: = true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}
UNKNOWN {
	if: newImage("images/tour1_19-over.gif"); tour1_20_over: newImage("images/tour1_20-over.gif"); tour1_21_over: newImage("images/tour1_21-over.gif"); preloadFlag: true
}