function validateForm_emailEntry(theForm){
	if (theForm.to.value == ""){
		alert("Please enter a value for the \"Name\" field.");
		theForm.to.focus();
		return false;
	}
	if (echeck(theForm.to.value)==false){
		theForm.to.focus();
		return false;
	}
	if (theForm.from.value == ""){
		alert("Please enter a value for the \"Email\" field.");
		theForm.from.focus();
		return false;
	}
	if (echeck(theForm.from.value)==false){
		theForm.from.focus();
		return false;
	}
	return true;
}

function validateForm(theForm){
	if (theForm.author.value == ""){
		alert("Please enter a value for the \"Name\" field.");
		theForm.author.focus();
		return false;
	}
	if (theForm.email.value == ""){
		alert("Please enter a value for the \"Email\" field.");
		theForm.email.focus();
		return false;
	}
	if (echeck(theForm.email.value)==false){
		theForm.email.focus();
		return false;
	}
	if (theForm.text.value == ""){
		alert("Please enter a value for the \"Comments\" field.");
		theForm.text.focus();
		return false;
	}
	return true;
}

function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	
	if (str.indexOf(at)==-1){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || (str.indexOf(dot)+1)==lstr){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(at,(lat+1))!=-1){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(dot,(lat+2))==-1){
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(" ")!=-1){
		alert("Invalid E-mail ID");
		return false;
	}
	return true;
}