function hideAll() {
	for (i = 1; i <=2; i++) {
		if(document.layers) {
			document.layers["sub" + i].visibility = "hidden";
	
		}
		else if(document.all) {
			document.all["sub" + i].style.visibility = "hidden";
		}
		else {
			document.getElementById("sub" + i).style.visibility = "hidden";
		}
	}
}

function submenu(n) {
	hideAll();
	if (n>0) {
		calcPos(n);
		if(document.layers) {
		document.layers["sub"+n].visibility = "visible";
		document.layers["sub"+n].left = dx;
		document.layers["sub"+n].top = dy;
		}
		else if (document.all) {
		document.all["sub"+n].style.visibility = "visible";
		document.all["sub"+n].style.left = dx;
		document.all["sub"+n].style.top = dy;
		}
		else {
		document.getElementById("sub"+n).style.visibility = "visible";
		document.getElementById("sub"+n).style.left = dx+"px";
		document.getElementById("sub"+n).style.top = dy+"px";
		}
	}
}

var dx = 0;
var dy = 0;
var ynum = 0;

function calcPos(n){
	ynum = 1;
	if (n==2) ynum = -410;
	var img = document.images["dot"+n];
	if(document.layers) {
		dx = (img.x) + ynum;
		dy = (img.y) +10;
	}
	else {
		dx = getX(img) + ynum;
		dy = getY(img) +10;
	}
}

function getX(obj){
	return( obj.offsetParent==null ? obj.offsetLeft : obj.offsetLeft+getX(obj.offsetParent) );
}

function getY(obj){
	return( obj.offsetParent==null ? obj.offsetTop : obj.offsetTop+getY(obj.offsetParent) );
}

rien = " \t\n\r";
function Nothing(s){  
	return ((s == null) || (s.length == 0))
}
function Blank(s) {
	var i;
    if (Nothing(s)) return true;
    for (i = 0; i < s.length; i++){
	var c = s.charAt(i);
	if (rien.indexOf(c) == -1) 
	return false;
    }
    return true;
}

function sendMail(e) {
	if (Blank(document.Form1.tb4name.value)) {
		alert('Type in Your Name');
		document.Form1.tb4name.focus();
		return false;	
	}
	if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.Form1.tb4email.value)){	
		alert("Type in a valid Email Address");
		document.Form1.tb4email.focus();
		return false;
	}
	if (Blank(document.Form1.tb4comment.value)) {
		alert('Type in Your Comments');
		document.Form1.tb4comment.focus();
		return false;	
	}
	return true;
}