// JavaScript Document

function chgPic(chgTo) {
	if(document.getElementById) {
		for (i=1; i<=noOfPics; i++) {
			document.getElementById(i).className =  "picNav";
		}
		document.getElementById(chgTo).className = "picNavSelected";
		picSelected = chgTo;
		document.getElementById('mainPic').src = "images/"+pgSuffix+"_"+picSelected+".jpg";
	}
}

function nextPic() {
	if((document.getElementById) && (picSelected < noOfPics)) {
		for (i=1; i<=noOfPics; i++) {
			document.getElementById(i).className =  "picNav";
		}
		picSelected++;
		document.getElementById(picSelected).className = "picNavSelected";
		document.getElementById('mainPic').src = "images/"+pgSuffix+"_"+picSelected+".jpg";
	}
}

function prevPic() {
	if((document.getElementById) && (picSelected > 1)) {
		for (i=1; i<=noOfPics; i++) {
			document.getElementById(i).className =  "picNav";
		}
		picSelected--;
		document.getElementById(picSelected).className = "picNavSelected";
		document.getElementById('mainPic').src = "images/"+pgSuffix+"_"+picSelected+".jpg";
	}
}