netscape_ = (document.layers)	? 1 : 0;
explorer_ = (document.all)	? 1 : 0;

if (document.images['pp1']) {
	F1=new Image;
	F1.src=document.images['pp1'].src;
}

F1n=new Image;
F1n.src="./images/spacer.gif";

document.getElementById('menu1').onmouseover = function(){menushow('menu1')};
document.getElementById('menu1').onmouseout = function(){menuhide('menu1')};
document.getElementById('menu2').onmouseover = function(){menushow('menu2')};
document.getElementById('menu2').onmouseout = function(){menuhide('menu2')};
document.getElementById('menu3').onmouseover = function(){menushow('menu3')};
document.getElementById('menu3').onmouseout = function(){menuhide('menu3')};
document.getElementById('menu4').onmouseover = function(){menushow('menu4')};
document.getElementById('menu4').onmouseout = function(){menuhide('menu4')};


function si(Name,Img) {
    document.images[Name].src=eval(Img+'.src');
  }
            
function SetImg(Img) {
    document.images['pp1'].src=eval(Img+'.src');
  }

function menushow(menu1)
{
SetImg('F1n');
	if (explorer_)	{
		document.getElementById(menu1).style.visibility = 'visible';
		} else if(netscape_){
		document.layers[menu1].visibility='show';
		}
		else{
		document.getElementById(menu1).style.visibility = 'visible';
		}
}
function menuhide(menu1)
{
		if (explorer_)	{
		document.getElementById(menu1).style.visibility = 'hidden';
		} else if(netscape_) {
		document.layers[menu1].visibility='hiden';
		}
		else{
		document.getElementById(menu1).style.visibility = 'hidden';
		}
			
}

function allhide()
{
SetImg('F1');
	if (explorer_)	{
		document.getElementById('menu1').style.visibility = 'hidden';
		document.getElementById('menu2').style.visibility = 'hidden';
		document.getElementById('menu3').style.visibility = 'hidden';
		document.getElementById('menu4').style.visibility = 'hidden';
		} else if(netscape_){
		document.layers['menu1'].visibility='hiden';
		document.layers['menu2'].visibility='hiden';
		document.layers['menu3'].visibility='hiden';
		document.layers['menu4'].visibility='hiden';
		}
		else{
		document.getElementById('menu1').style.visibility = 'hidden';
		document.getElementById('menu2').style.visibility = 'hidden';
		document.getElementById('menu3').style.visibility = 'hidden';
		document.getElementById('menu4').style.visibility = 'hidden';
		}
}

//мигалки указателей на продукции
//обычный указатель
products_pointer_s = new Image ();
products_pointer_s.src = '../images/lines/vertical_pointer_s.gif';
products_pointer = new Image ();
products_pointer.src = '../images/lines/vertical_pointer.gif';
//последний в вертикальном списке
products_pointer_last_s = new Image ();
products_pointer_last_s.src = '../images/lines/vertical_last_s.gif';
products_pointer_last = new Image ();
products_pointer_last.src = '../images/lines/vertical_last.gif';

//функция установки указателя
//обычный указатель
function setPointer (image_name, mode) {
	if (mode == 1)
	{
		document.images[image_name].src = products_pointer_s.src;
	}
	else
	{
		document.images[image_name].src = products_pointer.src;
	}
}

//последний в вертикальном списке
function setLastPointer (image_name, mode) {
	if (mode == 1)
	{
		document.images[image_name].src = products_pointer_last_s.src;
	}
	else
	{
		document.images[image_name].src = products_pointer_last.src;
	}
}