var cached=0;

if (document.images){

the_about_off = new Image()
the_about_off.src = "/navbar/about.gif"
the_about_on = new Image()
the_about_on.src = "/navbar/about_on.gif"

the_home_off = new Image()
the_home_off.src = "/navbar/home.gif"
the_home_on = new Image()
the_home_on.src = "/navbar/home_on.gif"

the_hr_off = new Image()
the_hr_off.src = "/navbar/hr.gif"
the_hr_on = new Image()
the_hr_on.src = "/navbar/hr_on.gif"

the_training_off = new Image()
the_training_off.src = "/navbar/training.gif"
the_training_on = new Image()
the_training_on.src = "/navbar/training_on.gif"

cached=1;
}

function imageOn(imgName) {
	if (cached==1) {
	lineOn = eval("the_" + imgName + "_on.src");
	document [imgName].src= lineOn;
	}
}

function imageOff(imgName) {
	if (cached==1) {
	lineOff = eval("the_" + imgName + "_off.src");
	document [imgName].src= lineOff;
	}
}