function vistog (lyr, mode1, lyr2, mode2, lyr3, mode3, lyr4, mode4, lyr5, mode5) {   document.getElementById(lyr).style.visibility = mode1;   document.getElementById(lyr2).style.visibility = mode2;   document.getElementById(lyr3).style.visibility = mode3;   document.getElementById(lyr4).style.visibility = mode4;   document.getElementById(lyr5).style.visibility = mode5;}function vistoo (lyur, moad1, lyur2, moad2) {   document.getElementById(lyur).style.visibility = moad1;   document.getElementById(lyur2).style.visibility = moad2;}