var waitTime = 1*800;
var waitInt = -1
var myTimer = setTimeout('TimerUp()', waitTime);

function tVisible (object, makeVisible) {
	var dS = "", sD = "";
	if (navigator.appName == "Netscape") { dS="document."; } else { sD=".style"; }
	eval(dS + object + sD + ".visibility = " + "(makeVisible ? 'visible' : 'hidden');");
}

function makeOneVisible ( objNum ) {
	var lastOne = 4;
	for(var i = 1; i <= lastOne; i++) { tVisible('obj'+i, (i == objNum ? true : false)); }
}

function tinVisible (object, makeVisible) {
	var dS = "", sD = "";
	if (navigator.appName == "Netscape") { dS="document."; } else { sD=".style"; }
	eval(dS + object + sD + ".visibility = " + "(makeVisible ? 'hidden' : 'visible');");
}

function makeOneInVisible ( objNum ) {
	var lastOne = 4;
	for(var i = 1; i <= lastOne; i++) { tinVisible('obj'+i, (i == objNum ? true : false)); }
}

function TimerUp () {
	if (waitInt == 1) { makeOneVisible(0); waitInt = -1; }
	if (waitInt >= 0) { waitInt++; }
	myTimer = setTimeout('TimerUp()', waitTime);
}

function setTimer (myVal) {
	waitInt = myVal;
	return true;
}