function level0(type) {    document.getElementById("menuLeyer").style.visibility = type;     }

function i1(type) {    document.getElementById("i1").style.visibility = type;     }
function i2(type) {    document.getElementById("i2").style.visibility = type;     }
function i3(type) {    document.getElementById("i3").style.visibility = type;     }
function s1(type) {    document.getElementById("s1").style.visibility = type;   }
function s2(type) {    document.getElementById("s2").style.visibility = type;   }
function s3(type) {    document.getElementById("s3").style.visibility = type;   }