// functies voor menu-sturing Sanelco.be

function overBtn(nr) {
  i = document.getElementById('mainMenuBtn'+nr);
  i.src = i.src.replace('.gif', 'o.gif')
  }

function outBtn(nr) {
  i = document.getElementById('mainMenuBtn'+nr);
  i.src = i.src.replace('o.gif', '.gif')
  }

function imgSwap(objImg) {
  var strOver  = "_o";     // image to be used with mouse over
  var strNormal = "_n";     // normal image
  var strImg = objImg.src;
  if (strImg.indexOf(strOver) != -1) {
    objImg.src = strImg.replace(strOver,strNormal);
    } else {
    objImg.src = strImg.replace(strNormal,strOver);
    }
  }

var overM = new Array();
overM[3]=0;
overM[4]=0;
overM[5]=0;
var overS = new Array();
overS[3]=0;
overS[4]=0;
overS[5]=0;

function showSubMenu(objImg,nr) {
  imgSwap(objImg);
  overM[nr] = 1;
  s = document.getElementById('submenu'+nr);
  s.style.display = 'block';
  }

function hideSubMenu(objImg,nr) {
  imgSwap(objImg);
  overM[nr] = 0;
  s = document.getElementById('submenu'+nr);
  if (overS[nr] == 0) {
    s.style.display = 'none';
    }
  }

function mouseOverSub(nr) {
  overS[nr] = 1;
  s = document.getElementById('submenu'+nr);
  s.style.display = 'block';
  }

function mouseOutSub(nr) {
  overS[nr] = 0;
  s = document.getElementById('submenu'+nr);
  s.style.display = 'none';
  if (overM[nr] == 0) {
    s.style.display = 'none';
    }
  }