function checking()

{


 if(document.ContactForm.Fname.value=="")
	    {
		 alert("Plese enter your first name")
		document.ContactForm.Fname.focus()
		 return false;
		
		}
		
 if(document.ContactForm.Lname.value=="")
	    {
		 alert("Plese enter your Last name")
		 document.ContactForm.Lname.focus()
		 return false;
		}
		
	if(document.ContactForm.Email.value.indexOf("@",0)< 1){
	alert('Email Is Not Valid');
	document.ContactForm.Email.focus();
	return false;
	}  
	//There must be one "@" symbol
			atPos = document.ContactForm.Email.value.indexOf("@",1)			
			if (atPos == -1)
			 {
		alert('Email Is Not Valid');
	document.ContactForm.Email.focus();
	return false;
			 }
	 // There must be only one "@" symbol
			if (document.ContactForm.Email.value.indexOf("@",atPos+1) != -1) 
			{	
				alert('Email Is Not Valid');
	document.ContactForm.Email.focus();
	return false;
			}
			// There must be at least one "." after the "@"
			periodPos = document.ContactForm.Email.value.indexOf(".",atPos)
			if (periodPos == -1) 
			{					
				alert('Email Is Not Valid');
	document.ContactForm.Email.focus();
	return false;
			}
			// There must be at least 2 characters after the "."
			if (periodPos+3 > document.ContactForm.Email.value.length)	
			{		
				alert('Email Is Not Valid');
	document.ContactForm.rEmail.focus();
	return false;
				
	}
	


//document.ContactForm.submit()

 }
// -->