function SwapSubMenus(varElement, varAction) {
	var MenuArray = new Array("menu1","menu2","menu3");
	var objMenu;
	var objMenu2;
		
	for (i=0;i<eval(MenuArray.length);i++) {

		objMenu = GetObject(MenuArray[i]);
		objMenu2 = GetObject(MenuArray[i]+'a');
		
		if (String(varElement) == String(MenuArray[i])) {
			if (objMenu) {objMenu.style.visibility = "visible";}
			if (objMenu2) {objMenu2.style.visibility = "visible";}
			
		} else {
			if (objMenu) {objMenu.style.visibility = "hidden";}
			if (objMenu2) {objMenu2.style.visibility = "hidden";}
		}
	}
}

function GetObject(n){
	var x,t; 
	
	if ((n.indexOf("?")) > 0 && parent.frames.length) {
		t = n.split("?");
		x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
	} else {
		x=document.getElementById(n)
	}
	return x;
}

function navigate(id, menuId, fileName){
	var list = new Array("company","products","buy");
	var root = "images/";
	
	//document[id].src = root + fileName;
	SwapSubMenus(menuId,'true');
	for(i=0;i<eval(list.length);i++){		
		if(id != list[i]){			
			document[list[i]].src = root + list[i] + ".gif";
		}else{
			document[list[i]].src = root + fileName;
		}
	}	
}

function ImgChange(imgNum,imgSrc){ 
	document.images[imgNum].src = imgSrc;
}