function formVal(theForm){
	if (theForm.name.value == ""){
		alert("Type your name ,please.");
		theForm.name.focus();
		return (false);
	}
	if (theForm.email.value == ""){
		alert("Type your e-mail address ,please.");
		theForm.email.focus();
		return (false);
	}

	if (theForm.message.value == "") {
			alert("Type your comment ,please.");
			theForm.message.focus();
			return (false);
  	}

var emailStr = theForm.email.value
var emailPat=/^(.+)@(.+)$/
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
var validChars="\[^\\s" + specialChars + "\]"
var quotedUser="(\"[^\"]*\")"
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
var atom=validChars + '+'
var word="(" + atom + "|" + quotedUser + ")"
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
		alert("Invalid address")
		return (false)
	}
var user=matchArray[1]
var domain=matchArray[2]
	if (user.match(userPat)==null) {
	    alert("Invalid address")
	    return (false)
	}
var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		        alert("Invalid address")
			return (false)
		    }
	    }
	   //return(true)
	}
var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("Invalid address")
	    return (false)
	}

var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
	if (domArr[domArr.length-1].length<2 ||
	    domArr[domArr.length-1].length>3) {
	   alert("Invalid address(com. jp.")
	   return (false)
	}

	if (len<2) {
	   var errStr="Invalid address"
	   alert(errStr)
	   return (false)
	}
}