style menù

[asdfgasdfg]

ragazzi sto usando questo menù:
http://www.html.it/dynamic/menu/menu04codice.htm

però non riesco a far in modo che venga visualizzato solo il bordo esterno della tabella del menù a comparsa e non il bordo tra le celle,
le righe dove genera il menù sono:

function itemSetup(arrayPointer,whichArray) {
	this.className = "items";
	this.itemOver = itemOver;
	this.itemOut = itemOut;
	this.onmouseover = this.itemOver;
	this.onmouseout = this.itemOut;

	this.dispText = whichArray[arrayPointer];
	this.linkText = whichArray[arrayPointer + 1];
	this.hasMore = whichArray[arrayPointer + 2];

	if (this.linkText.length > 0) {
		this.linkIt = linkIt;
		if (NS4) {
			this.onfocus = this.linkIt;
		}
		else {
			this.onclick = this.linkIt;
			this.style.cursor = "hand";
		}
	}
      
	if (this.hasMore) {
		htmStr = imgStr + this.dispText;
	}
	else {
		htmStr = this.dispText;
	}

	if (NS4) {
		layStr = "<SPAN CLASS=items>" + htmStr+ "</SPAN>";
		this.document.write(layStr);
		this.document.close();

		this.bgColor = backCol;
		this.clip.right = menuWidth;
		this.visibility = "inherit";
		this.container = this.parentLayer;

		if (arrayPointer == 0) {
			this.top = 0;
		}
		else {
			this.top = this.prevItem.top + this.prevItem.document.height - borWid;
		}
		this.left = 0;
	}
	else {
		this.className = "items";
		this.style.padding = 3;
		this.innerHTML = htmStr;

		this.style.backgroundColor = backCol; 
		this.container = this.offsetParent;

		if (arrayPointer == 0) {
			
			this.style.pixelTop = 0;
		}
		else {
			this.style.pixelTop = this.prevItem.style.pixelTop + this.prevItem.offsetHeight - borWid;
		}
		this.style.pixelLeft = 0;
		
	}
}

Avete idea di come fare???