/*JavaScript Bible, Fourth Editionby Danny Goodman John Wiley & Sons CopyRight 2001*/<HTML><HEAD><SCRIPT LANGUAGE="JavaScript">function showNameHelp() { alert("Enter your first and last names.") event.cancelBubble = true return false}function showYOBHelp() { alert("Enter the four-digit year of your birth. For example: 1972") event.cancelBubble = true return false}function showGenericHelp() { alert("All fields are required.") event.cancelBubble = true return false}function showLegend() { document.all.legend.style.visibility = "visible"}function hideLegend() { document.all.legend.style.visibility = "hidden"}function init() { var msg = "" if (navigator.userAgent.indexOf("Mac") != -1) { msg = "Press 'help' key for help." } else if (navigator.userAgent.indexOf("Win") != -1) { msg = "Press F1 for help." } document.all.legend.style.visibility = "hidden" document.all.legend.innerHTML = msg}</SCRIPT></HEAD><BODY onLoad="init()" onHelp="return showGenericHelp()"><H1>onHelp Event Handler</H1><HR><P ID="legend" STYLE="visibility:hidden; font-size:10px"> </P><FORM>Name: <INPUT TYPE="text" NAME="name" SIZE=30 onFocus="showLegend()" onBlur="hideLegend()" onHelp="return showNameHelp()"><BR>Year of Birth: <INPUT TYPE="text" NAME="YOB" SIZE=30 onFocus="showLegend()" onBlur="hideLegend()" onHelp="return showYOBHelp()"></FORM></BODY></HTML>
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