Two questions (semi-newbie)

Try this example found on Ray Camden's blog

<cffunction name="checkFieldSet" output="false" returnType="string">
<cfargument name="fields" type="string" required="true" hint="Fields to search">
<cfargument name="form" type="string" required="true" hint="Name of the form">
<cfargument name="ascode" type="string" required="true" hint="Code to fire if all is good.">

<cfset var vcode = "">
<cfset var f = "">

<cfsavecontent variable="vcode">
var ok = true;
var msg = "";
<cfloop index="f" list="#arguments.fields#">
<cfoutput>
if(!mx.validators.Validator.isValid(this, '#arguments.form#.#f#')) { msg += #f#.errorString + "\n"; ok = false; }
</cfoutput>
</cfloop>
</cfsavecontent>
<cfset vcode = vcode & "if(!ok) { mx.controls.Alert.buttonWidth=100; mx.controls.Alert.show(msg,'Error'); }">
<cfset vcode = vcode & "if(ok) #ascode#">
<cfset vcode = replaceList(vcode,"#chr(10)#,#chr(13)#,#chr(9)#",",,")>

<cfreturn vcode>

</cffunction>
<cfform name="form1" format="flash" skin="haloblue" width="580" height="500" action="index.cfm" preservedata="yes">
<cfformgroup type="page">
<cfinput name="InsuranceName" type="text" label="Insurance Company Name:" width="150" required="yes" message="InsuranceName is Required." />
<cfinput name="PlanType" type="text" label="Plan Type:" width="150" required="yes" message="PlanType is Required." />
<cfinput name="PolicyNumber" type="text" label="Policy Number:" width="150" required="yes" message="PolicyNumber is Required." />
<cfinput name="GroupName" type="text" label="Group Name:" width="150" required="yes" message="GroupName is Required." />
<cfinput name="GroupNumber" type="text" label="Group Number:" width="150" required="yes" message="GroupNumber is Required." />
<cfinput name="Display" type="text" label="Display:" width="150" />

</cfformgroup>

<cfinput type="button" name="step3b" value="Next" onClick="#checkFieldSet("PlanType,PolicyNumber,GroupName,GroupNumber","form1","PlanType.text=InsuranceName.text")#">

</cfform>