function echeck(str) {



		var at="@"

		var dot="."

		var lat=str.indexOf(at)

		var lstr=str.length

		var ldot=str.indexOf(dot)

		if (str.indexOf(at)==-1){

		   alert("Invalid Email Address")

		   return false

		}



		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){

		   alert("Invalid Email Address")

		   return false

		}



		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){

		    alert("Invalid Email Address")

		    return false

		}



		 if (str.indexOf(at,(lat+1))!=-1){

		    alert("Invalid Email Address")

		    return false

		 }



		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

		    alert("Invalid Email Address")

		    return false

		 }



		 if (str.indexOf(dot,(lat+2))==-1){

		    alert("Invalid Email Address")

		    return false

		 }

		

		 if (str.indexOf(" ")!=-1){

		    alert("Invalid Email Address")

		    return false

		 }



 		 return true					

	}



function ValidateForm(){



	var msg=document.form.gbmsg

	var fullname=document.form.gbfullname

	var emailadd=document.form.gbemailadd

	

	

	if ((msg.value==null)||(msg.value=="")){

		alert("Please Enter Your Message")

		msg.focus()

		return false

	}

	

	if ((fullname.value==null)||(fullname.value=="")){

		alert("Your Name Please..")

		fullname.focus()

		return false

	}





//--------------------------email address validation-----------------------------

	if ((emailadd.value==null)||(emailadd.value=="")){

		alert("Please Enter Email Address")

		emailadd.focus()

		return false

	}

	

	if (echeck(emailadd.value)==false){

		emailadd.value=""

		emailadd.focus()

		return false

	}

//--------------------------email address validation-----------------------------





	



	

	

	

	return true

 }