function changeNav(idName,imageName,arrowName) {
		if (document.getElementById(idName)) {
			document.getElementById(idName).src="images/"+imageName;
		}
		if (document.getElementById("arrow")) {
			if (arrowName != "") {
				document.getElementById("arrow").innerHTML = "<img src=\"images/"+arrowName+".gif\">";
			} else if (hubName != "") {
				document.getElementById("arrow").innerHTML = "<img src=\"images/"+hubName+".gif\">";
			} else {
				document.getElementById("arrow").innerHTML = "";
			}
		}
	}
	
	


function showGallery(ord) {
	var winTop=40;
	var winLeft=300;
	var d = new Date();
	var winTime = d.getUTCHours()+'_'+d.getUTCMinutes()+'_'+d.getUTCSeconds();
 	pop = window.open('galleryPop.html?p='+ord,'grayreno','width=700,height=700,top=' + winTop + ',left=' + winLeft + ',toolbar=no,scrollbars=no,resizable=no,location=no,menubar=no,directories=no,status=no,copyhistory=no');
	pop.focus();
//	changeClass("galleryPics","galleryContent galleryOn");

}

// checks existence of ID in markup
function checkID(idName) {
	if (document.getElementById(idName)) {
		return true;
	} else {
		return false;
	}
}

// focuses on element
function focusMe(idName) {
	if (checkID(idName)){
		document.getElementById(idName).focus();
	}
}

// submit an element
function submitMe(idName) {
	if (checkID(idName)) {
		document.getElementById(idName).submit();
	}
}

// submit an element
function resetMe(idName) {
	if (checkID(idName)) {
		document.getElementById(idName).reset();
	}
}

// clears an element
function clearMe(t,val) {
	if (t.value==val) {
		t.value = '';
	}
}

function valueMe(idName,val) {
	if (checkID(idName)){
		document.getElementById(idName).value=val;
	}
}

// shows a html block
function showMe(idName) {
	if (checkID(idName)) {
		document.getElementById(idName).style.display="block";
	}
}

// hides a html block
function hideMe(idName) {
	if (checkID(idName)) {
		document.getElementById(idName).style.display="none";
	}
}

// changes a stylesheet class to a specified ID
function changeClass(idName,toClass) {
	if (checkID(idName)) {
		document.getElementById(idName).className=toClass;
	}
}