/* * show_tooltip(): Display a tooltip, either using a modern * browser's native support for this feature, or * by simulating it for older browsers using * layers. */ function show_tooltip(element, event, text){ /* * If this is IE (document.all) or a modern, * standards-compliant browser (document.getElementById), * use the 'title' property to set the tooltip natively. */ if (document.all || document.getElementById) { element.title = text /* * Otherwise this is an older Netscape browser (document.layers), * so use layers to simulate the same thing. Be sure to include a *
element after the tag, otherwise this * won't work. e.g. * */ } else if (document.layers){ document.tooltip.document.write('' + text + '') document.tooltip.document.close() document.tooltip.left = event.pageX + 5 document.tooltip.top = event.pageY + 5 document.tooltip.visibility = "show" } } /* * hide_tooltip(): Hide a tooltip. */ function hide_tooltip() { /* * Modern browsers auto-hide tooltips after 5 seconds and * onMouseOut. For older Netscape browsers, explicitly * hide the tooltip element when the onMouseOut event is * triggered. */ if (document.layers) { document.tooltip.visibility = "hidden" } }