//отображение/скрытие блока информации
function SwitchBlock(block){
    if(document.getElementById(block).style.display=="block"){
        document.getElementById(block).style.display="none";
        }
    else{
        document.getElementById(block).style.display="block";
        }
    }

function HideBlock(block){
    document.getElementById(block).style.display="none";
    }

function ShowBlock(block){
    document.getElementById(block).style.display="block";
    }