var iDirHead = "url(../photos/07/img_";
var iDirTail = ".jpg)";
var iNum = 1;
var iMin = 1;
var iMax = 4;
var advanceTimer = null;
var vDelay = 6000;
var strHref = window.location.href;
//setTimeout(alertSize,5000);

function iNext() { //when user clicks the next button
	showStop();
	iNum=iNum+1;
	iCheck();
}

function iPrev() { //when user clicks the previous button
	showStop();
	iNum=iNum-1;
	iCheck();
}

function showOn() {
	iNum=iNum+1;
	iCheck();
}

function showStop() {
	clearTimeout(advanceTimer);
}

function iCheck() {
	if (iNum < iMin) {
		iNum = iMax;
		iUpdate();
	} else if (iNum > iMax) {
		iNum = iMin;
		iUpdate();
	} else {
		iUpdate();
	}
}

function iUpdate() {
	document.getElementById('frame03').style.background = iDirHead+iNum+iDirTail;
	document.getElementById('pNum').innerHTML=iNum+"/"+iMax;
	
	advanceTimer = setTimeout(showOn,vDelay);
}

function init() {
	var frame = document.getElementById('frame03');
	var pNum = document.getElementById('pNum');
	//alert(strHref);
	document.getElementById("frame03").style.background = iDirHead+iNum+iDirTail;
	advanceTimer = setTimeout(showOn,vDelay);
}

function sequencer() {
	document.write(iNum+"/"+iMax);
}