function validate()
{

	if(document.form1.name.value == "")
	{
		alert("Please enter your name");
		document.form1.name.focus();
		return false;
	}
	if(document.form1.email.value == "")
	{
		alert("Please enter your email address");
		document.form1.email.focus();
		return false;
	}
	if(document.form1.comments.value == "")
	{
		alert("Please enter your enquiry");
		document.form1.comments.focus();
		return false;
	}
	if (document.form1.email.value != "")
	{
	  var va1=document.form1.email.value;
	  var indx1=va1.indexOf("@");
	  var val1=va1.charAt(indx1);
	  if(val1!="@")
	  {
		alert("Please enter your email address as xxx@yyy.com");
		document.form1.email.focus(); 
		return false;
	  }
	  var va2=document.form1.email.value;
	  var indx2=va2.indexOf(".");
	  var val2=va2.charAt(indx2);
	  if(val2!=".")
	  {
		alert("Please enter your email address as email@email.com");
		document.form1.email.focus(); 
		return false;
	  }	
	} 
	
	return true;
}//validate()