function st(id, sp)
{
    d = document.getElementById(id); 
    if(d != null)
    {
        d.style.display = (d.style.display == 'none' ? 'block' : 'none');        
        if (sp != null)
        {            
            sp.innerHTML = (d.style.display == 'none' ? 'смотреть' : 'справа ->'); 
            sp.style.color = (d.style.display == 'none' ? '#5279A1' : '#333333');
        } 
    }
}

function ct(id)
{
    d = document.getElementById(id);    
    if(d != null)
    {
        d.style.display = (d.style.display == 'none' ? 'block' : 'none');        
    }
}

function morda(c, text1, text2)
{
    text1 = document.getElementById(text1);
    text2 = document.getElementById(text2);
        
    if (c != null && text1 != null && text2 != null)
    {   
        text1.value = '0';                     
        if (c.checked == true)                  
            text2.value = '0';        
        else                    
            text2.value = '10';
    }
}