function check_empty()
	{
		var str_email = document.frm.emailAddress.value;
	
		var check_email = str_email.indexOf("@");
	
		if(document.frm.name.value=='')
		{
			alert('Please enter your name');
			document.frm.name.focus();
			return false
		}
		else if(document.frm.telephoneNumber.value=='')
		{
			alert('Please enter a telephone number');
			document.frm.telephoneNumber.focus();
			return false
		}
		else if(document.frm.emailAddress.value=='')
		{
			alert('Please Enter your email address.');
			document.frm.emailAddress.focus();
			return false
		}
		else if(check_email == -1)
		{
			alert( "Your email appears to be invalid" );
			document.frm.emailAddress.focus();
			return false ;
		
		}
		else if(document.frm.terms[0].checked==false)
		{
			alert('You have to agree to the terms to continue');
			return false
		}
		else if(document.frm.furtherContact[0].checked==false)
		{
			alert('You have to agree to being contacted');
			return false
		}
		
			return true
	}