//  нижнее навигационное меню
i = 1;
document.write('<div class="hidden_menu_div">');
while(document.getElementById('nav_img_' + i))
{
	nav_image = document.getElementById('nav_img_' + i);
	w = nav_image.src.length;
	n = nav_image.src;
	new_src = n.substr(0,(w-4)) + '_a.gif';
	document.write('<div><img src="' + new_src + '" alt="" border="0"></div>');
//	pre_string = new_src + ',';
	
	nav_image.onmouseover = function()
	{
		w = this.src.length;
		n = this.src;
		this.src = n.substr(0,(w-4)) + '_a.gif';
	}
	nav_image.onmouseout = function()
	{
		w = this.src.length;
		n = this.src;
		this.src = n.substr(0,(w-6)) + '.gif';
	}
	
	
	i++;
}
//preload_images(pre_string);
document.write('</div>');