function BirnBut(name, to)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
             point.src = to;
        }
        
        function mClick(addr)
        {
            window.location.href = addr;
        }

        function BirnButFon (name)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
            point.style.backgroundColor = "#C6D9F9";
        }
        /* Birn button in Background*/
        function BBFonImg(name, to)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
            point.style.backgroundImage = "url("+ to + ")";
        }
        
        function BirnButFonOn2 (name)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
            if (point.style.backgroundImage == "url(img/c_but2.png)")
            {
            return;
            }
            point.style.backgroundImage = "url(img/c_but2.png)";
        }
        
        function BirnButFonOut2 (name)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
            if (point.style.backgroundImage == "url(img/c_but.png)")
            {
            return;
            }
            point.style.backgroundImage = "url(img/c_but.png)";
        }
        
        function BirnButOff (name)
        {
            var point = document.getElementById (name)
            if (point == null)
            {
            return;
            }
            point.style.backgroundColor = "Transparent";
        }