function hideLayer(whichLayer) { if (document.getElementById) { // this is the way the standards work document.getElementById(whichLayer).style.visibility = "hidden"; } else if (document.all) { // this is the way old msie versions work document.all[whichlayer].style.visibility = "hidden"; } else if (document.layers) { // this is the way nn4 works document.layers[whichLayer].visibility = "hidden"; } } function showLayer(whichLayer) { if (document.getElementById) { // this is the way the standards work document.getElementById(whichLayer).style.visibility = "visible"; } else if (document.all) { // this is the way old msie versions work document.all[whichlayer].style.visibility = "visible"; } else if (document.layers) { // this is the way nn4 works document.layers[whichLayer].visibility = "visible"; } } function handleClick(whichClick) { if (whichClick == "hide it") { // then the user wants to hide the layer hideLayer("boxthing"); } else if (whichClick == "show it") { // then the user wants to show the layer showLayer("boxthing"); } }