function red_block1_block()
{            
    document.getElementById("red_block1").style.display = "block";
}
function red_block1_none()
{
    document.getElementById("red_block1").style.display = "none";
}
function red_block2_block()
{            
    document.getElementById("red_block2").style.display = "block";
}
function red_block2_none()
{
    document.getElementById("red_block2").style.display = "none";
}
function red_block3_block()
{            
    document.getElementById("red_block3").style.display = "block";
}
function red_block3_none()
{
    document.getElementById("red_block3").style.display = "none";
}
function red_block4_block()
{            
    document.getElementById("red_block4").style.display = "block";
}
function red_block4_none()
{
    document.getElementById("red_block4").style.display = "none";
}