function validation()
{
 if (document.form1.txtname.value=="")
 	{
   		alert("Please Enter Patient Name");
 		document.form1.txtname.focus()
   		return false;
      	}

if (document.form1.email.value=="")
 	{
   		alert("Please Enter e-mail address");
 		document.form1.email.focus()
   		return false;
      	}

if((document.form1.email.value.indexOf('@',1) ==-1)||(document.form1.email.value.indexOf('.',1) ==-1))
 	{
  		alert("Invalid e-mail address")
  		document.form1.email.value=""
		 document.form1.email.select()
		return (false)
	}

if (document.form1.txtphone.value=="")
 	{
   		alert("Please Enter Phone Number");
 		document.form1.txtphone.focus()
   		return false;
      	}
		
	document.form1.submit();
}