function check_empty()
	{
		var str_email = document.frm.emailAddress.value;
	
		var check_email = str_email.indexOf("@");
	
		if( (document.frm.name.value=='')||(document.frm.name.value=='name'))
		{
			alert('Please enter your name');
			document.frm.name.focus();
			return false
		}
		else if( (document.frm.company.value=='')||(document.frm.company.value=='company'))
		{
			alert('Please enter your company name');
			document.frm.company.focus();
			return false
		}
		else if( (document.frm.emailAddress.value=='')||(document.frm.emailAddress.value=='email address'))
		{
			alert('Please Enter your email address.');
			document.frm.emailAddress.focus();
			return false
		}
		else if( (document.frm.telephoneNumber.value=='')||(document.frm.telephoneNumber.value=='contact number'))
		{
			alert('Please enter a telephone number');
			document.frm.telephoneNumber.focus();
			return false
		}
		else if(check_email == -1)
		{
			alert( "Your email appears to be invalid" );
			document.frm.emailAddress.focus();
			return false ;
		}
		if( (document.frm.enquiry.value=='')||(document.frm.enquiry.value=='enquiry'))
		{
			alert('Please enter the nature of your enquiry');
			document.frm.enquiry.focus();
			return false
		}
		
			return true
	}
	
function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}