// JavaScript Document
var emailExp = /[a-zA-Z0-9\.\-]+@[a-zA-Z0-9\.\-]+\.[a-zA-Z0-9]{2,4}$/;
var numericExpression = /^[0-9]+$/;
var floatexp=/^[0-9]+\.[0-9]+$/;

function validate(id)
{
	var name=document.getElementById(id).value;
	if(name=="")
	{
		document.getElementById("err_"+id).innerHTML="Required field missing";
		document.getElementById(id).focus();
		isvalid=false;
	}
	else
	{
		isvalid=true;
	}
	
	return isvalid;
}

function multiple_validate()
{
	var stock=document.getElementById('txt_Stock Code').value;
	var price=document.getElementById('txt_Price').value;
	var desc=document.getElementById('txt_Description').value;

	if(stock=="" || price=="" || desc=="")
	{
		document.getElementById("err_display").innerHTML="Required fields missing";
		return false;
	}
	return true;
}


function newsletterContent()
{
	if(!validate('headline')|| !validate('intro')|| !validate('story'))
	{
		return false;
	}
	return true;
}

function checkEmail(id)
{
	var email=document.getElementById(id).value;
	
	if(email=="" || !emailExp.test(email))
	{
	   	alert("Enter Valid Email");
		document.getElementById(id).focus();
		return false;		
	}
	return true;
}

function validate_email(id)
{
	var email=document.getElementById(id).value;
	var emailExp="^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$"
	if(email=="" )
	{
			document.getElementById("err_"+id).innerHTML="Required field missing";
			document.getElementById(id).focus();
			
			return false;
	}
	if(!emailExp.test(email))
	{
	   	document.getElementById("err_"+id).innerHTML="Invalid Email";
		document.getElementById(id).focus();
		return false;		
	}
	return true;
}