function popupShow()
{
	document.getElementById('newsletter').style.display = 'block';
	
}
function popupHide()
{

	document.getElementById('newsletter').style.display = 'none';
}
function validateSubscribe()
{
	
	if(valSubscribe.subscribe.value.length==0)
	{
		alert('Enter your email');
		valSubscribe.subscribe.focus();
		return false;
	}
	else
	{
		validRegExp = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;  
		if(valSubscribe.subscribe.value.search(validRegExp) == -1) 
		{
			alert('Enter correct email');
			valSubscribe.subscribe.focus();
			return false;
		}
	}	
	
	return true;
}