var ie = document.all ? 1 : 0;
var dom = document.getElementById ? 1 : 0;
if(dom==1) ie = 0;
var imageArray = null;
var imageArrayOver = null;
var preloaded = false;

function PreloadImages()
{
	var image0 = new Image();
	image0.src = '../images/russian_nav/menu0.gif';
	var image1 = new Image();
	image1.src = '../images/russian_nav/menu1.gif';
	var image2 = new Image();
	image2.src = '../images/russian_nav/menu2.gif';
	var image3 = new Image();
	image3.src = '../images/russian_nav/menu3.gif';
	var image4 = new Image();
	image4.src = '../images/russian_nav/menu4.gif';
	var image5 = new Image();
	image5.src = '../images/russian_nav/menu5.gif';
	var image6 = new Image();
	image6.src = '../images/russian_nav/menu6.gif';

	var image0_over = new Image();
	image0_over.src = '../images/russian_nav/menu0_over.gif';
	var image1_over = new Image();
	image1_over.src = '../images/russian_nav/menu1_over.gif';
	var image2_over = new Image();
	image2_over.src = '../images/russian_nav/menu2_over.gif';
	var image3_over = new Image();
	image3_over.src = '../images/russian_nav/menu3_over.gif';
	var image4_over = new Image();
	image4_over.src = '../images/russian_nav/menu4_over.gif';
	var image5_over = new Image();
	image5_over.src = '../images/russian_nav/menu5_over.gif';
	var image6_over = new Image();
	image6_over.src = '../images/russian_nav/menu6_over.gif';
	
	imageArray = new Array(image0, image1, image2, image3, image4, image5, image6);
	imageArrayOver = new Array(image0_over, image1_over, image2_over, image3_over, image4_over, image5_over, image6_over);
	
	preloaded = true;
}
function GetMenuImage(idx)
{
    var menuImageObject = null;
    
    if( dom )
    {
    	if( eval(document.getElementById('img'+idx)) ) 
    	{
    		menuImageObject = document.getElementById('img'+idx);
    	}
    }
    else if( ie )
    { 
    	if( eval(document.all('img'+idx)) ) 
    	{
    		menuImageObject = document.all('img'+idx);
    	}
    }
    return menuImageObject;
}
function MouseOver(idx)
{
	if( preloaded)
	{	
		var imageObject = GetMenuImage(idx);
		if( imageObject != null )
			imageObject.src = imageArrayOver[idx].src;
		return true;
	}
}
function MouseOut(idx)
{
	if( preloaded ) 
	{	
		var imageObject = GetMenuImage(idx);
		if( imageObject != null )
			imageObject.src = imageArray[idx].src;
		return true;
	}
}