var sub1 = 0;
var sub2 = 0;
var sub3 = 0;
var sub4 = 0;
var sub5 = 0;
var sub6 = 0;
var sub7 = 0;
var sub8 = 0;

arrow = new Image();
arrow.src = "../images/arr.gif";

// SHOW ARROW IMAGE
function showArr(i) {
        document.getElementById(i).src = arrow.src;
}


// SETTING VARIABLES
function switchMenu(i){
        if (eval('sub' + i + ' == 0')){
                eval('sub' + i + ' = 1');
                hideSub(0);
                showSub(i);
        }
        else {
                eval('sub' + i + ' = 0');
                hideSub(i);
        }
}


// TURNING ON SELECTED SUBMENU
function showSub(n) {
                eval('document.getElementById("sub' + n + '").style.display=("block")');
                eval('sub' + n + ' = 1');
}


// TURNING OFF ALL SUBMENUS
function hideSub(k) {
        if (k == 0) {
                for (j = 1; j <= 8; j++) {
                        eval('document.getElementById("sub' + j + '").style.display=("none")');
                        eval('sub' + j + ' = 0');
                }
        }
        else {
                eval('document.getElementById("sub' + k + '").style.display=("none")');
                eval('sub' + k + ' = 0');
        }
}