function ValidString(strValue){
	var reOnlyWhiteSpace = /^\s*$/
	if(reOnlyWhiteSpace.test(strValue)) return false;//if there are any whitespaces and no characters, send it back false
	return true;
}

function CheckEmail(emailStr){

	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);
	
	var strErr_Message = "Please provide a valid email address.";

	if (matchArray==null) {
 		alert(strErr_Message); 	
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	if (user.match(userPat)==null) {
	    // user is not valid
		alert(strErr_Message);
	    	return false;
	}

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	    // this is an IP address
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				alert(strErr_Message);
				return false;
			}
			
	    	}
	    return true;
	}

	// Domain is symbolic name
	var domainArray=domain.match(domainPat);
	if (domainArray==null) {
		alert(strErr_Message);
		return false;
	}

	/* domain name seems valid, but now make sure that it ends in a
	   three-letter word (like com, edu, gov) or a two-letter word,
	   representing country (uk, nl), and that there's a hostname preceding 
	   the domain or country. */

	/* Now we need to break up the domain to get a count of how many atoms
	   it consists of. */
	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>4) {
	   // the address must end in a two letter or three letter word.
		alert("The address must end with a top-level domain two, three or four characters in length.\n\(ie:  .uk, .it, .com, .org, .info, etc.)");
		return false;
	}
	// Make sure there's a host name preceding the domain.
	if (len<2) {
	   	var errStr="This address is missing a hostname!"
		alert(errStr);
			
	   return false;
	}

	// If we've gotten this far, everything's valid!
	return true;
}

function Validate(oForm){

	if(!ValidString(oForm.contact_name.value)){
		alert("Please enter your name with your message.");
		return false;
		}

	if(!CheckEmail(oForm.contact_email.value)){
		return false;
		}

	if(!ValidString(oForm.contact_comment.value)){
		alert("Please enter a message before sending your e-mail.");
		return false;
		}

	return true;
}