// JavaScript Document
function showLayer(lay) {
	elem = (document.getElementById(lay))
	elem.style.visibility="visible";
}

function hideLayer(lay) {
	elem = (document.getElementById(lay))
	elem.style.visibility="hidden";
}


function switchDisplay(object) {
	var disp = getDisplay(object);
	if (disp == 'none') setDisplay(object, 'block');
	else if (disp == 'block') setDisplay(object, 'none');
}


function getDisplay(object) {
  if (document.getElementById) {
    return document.getElementById(object).style.display;
  }
  else if (document.layers && document.layers[object]) {
    return document.layers[object].display;
  }
  else if (document.all) {
    return document.all[object].style.display;
  }
}

function setDisplay(object, value) {
  if (document.getElementById) {
    document.getElementById(object).style.display = value;
  }
  else if (document.layers && document.layers[object]) {
    document.layers[object].display = value;
  }
  else if (document.all) {
    document.all[object].style.display = value;
  }
}


function show(object) {
  if (document.getElementById) {
    document.getElementById(object).style.visibility = 'visible';
  }
  else if (document.layers && document.layers[object]) {
    document.layers[object].visibility = 'visible';
  }
  else if (document.all) {
    document.all[object].style.visibility = 'visible';
  }
}

function hide(object) {
  if (document.getElementById) {
    document.getElementById(object).style.visibility = 'hidden';
  }
  else if (document.layers && document.layers[object]) {
    document.layers[object].visibility = 'hidden';
  }
  else if (document.all) {
    document.all[object].style.visibility = 'hidden';
  }
}