function validate()

	{				

		if(document.frm.txtname.value=="")

			{

				alert("Insert Name ");

				document.frm.txtname.focus();

				return false;

			}	

			

		if( document.frm.txtemail.value.length == 0 ) {

				alert('Please enter a valid email address');

					document.frm.txtemail.focus();

					return false;

			}

			else {

				//check email format

					var mail_id=document.frm.txtemail.value;

					var validEmail=true;

					if (mail_id.indexOf("@") < 1) validEmail=false;

					if (mail_id.indexOf(".") == -1) validEmail=false;

					if ((mail_id.indexOf(".") - mail_id.indexOf("@")) < 2) validEmail=false;

					if (!validEmail)

					{

						alert('Please enter a valid email address');

						document.frm.txtemail.focus();

						return false;

					}

				}

			if(document.frm.txtcomments.value=="")

			{

				alert("Insert Requirements ");

				document.frm.txtcomments.focus();

				return false;

			}	

			return true;			

	}