ns4 = (document.layers)? true:false;
ie4 = (document.all)? true:false;
var minx = 0;
var maxx = 0;
var maxy = 0;

if (ie4) { if (navigator.userAgent.indexOf('MSIE 5')>0) { ie5 = true; } else {ie5 = false;} } else { ie5 = false; }
if (ns4) { if (navigator.userAgent.indexOf('Mozilla/4.5')>0) { ns45 = true; } else {ns45 = false;} } else { ns45 = false; }

if (ns4) over = document.blankDiv;
if (ie4) over = blankDiv.style;

document.onmousemove = mouseMove
if (ns4) document.captureEvents(Event.MOUSEMOVE);

function showDiv(idx) { 
  hideDiv();
  displayDiv(idx); 
}

function hideDiv() {
	if (ns4) { over.visibility = "hide" }
	else { if (ie4) { over.visibility = "hidden" } }
}

function displayDiv(idx) {
	if (idx == 1) { 
		if (ns4) over = document.overDiv1;
		if (ie4) over = overDiv1.style;
		maxy = 320;
 		moveTo(over, 150, 233); 
	}
	if (idx == 2) {
		if (ns4) over = document.overDiv2;
		if (ie4) over = overDiv2.style;
		maxy = 310;
		moveTo(over, 220, 232);
	}
	if (idx == 3) {
		if (ns4) over = document.overDiv3;
		if (ie4) over = overDiv3.style;
		maxy = 280;
		moveTo(over, 320, 232);
	}
	if (idx == 4) { 
		if (ns4) over = document.overDiv4;
		if (ie4) over = overDiv4.style;
		maxy = 400;
		moveTo(over, 470, 233);
	}
	showObject(over);
}

function showObject(obj) {
if (ns4) { obj.visibility = "show"; } 
else if (ie4) { obj.visibility = "visible"; }
}

function mouseMove(e) { 
	if (ns4) {x=e.pageX; y=e.pageY;}
	if (ie4) {x=event.x; y=event.y;}
	if (ie5) {x=event.x+document.body.scrollLeft; y=event.y+document.body.scrollTop;}
	if (x < minx) { hideDiv() }
	if (x > maxx) { hideDiv() }
	if (ns4) {
		if (y < 75) { hideDiv() }
		if (y > maxy - 16) { hideDiv() }
	} else {
		if (y < 72) { hideDiv() }
		if (y > maxy) { hideDiv() }
	}
}

function moveTo(obj,xL,yL) {
	if (ns4) { 
		obj.left = xL;
		obj.top = yL + 6;
		if (ns45) { obj.top = yL + 12; }
       	minx = xL;
		maxx = xL + 137;
	} else {
		obj.left = xL - 10;
		obj.top = yL;
       	minx = xL - 10;
		maxx = xL + 300;
	}
}

function hideAllDiv(idx) {
	if (idx == 1) { 
		if (ns4) over = document.overDiv1;
		if (ie4) over = overDiv1.style;
		moveTo(over, 0, 0);
		hideDiv;
	}
	if (idx == 2) {
		if (ns4) over = document.overDiv2;
		if (ie4) over = overDiv2.style;
		moveTo(over, 0, 0);
		hideDiv;
	}
	if (idx == 3) {
		if (ns4) over = document.overDiv3;
		if (ie4) over = overDiv3.style;
		moveTo(over, 100, 0);
		hideDiv;
	}
	if (idx == 4) { 
		if (ns4) over = document.overDiv4;
		if (ie4) over = overDiv4.style;
		moveTo(over, 0, 0);
		hideDiv;
	}
}