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 E-mail Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
	}

function ValidateMail(){
	var fname=document.sendemail.fname;
	var sname=document.sendemail.sname;
	var subject=document.sendemail.subject;
	var email=document.sendemail.email;
	var msg=document.sendemail.msg;

	if ((fname.value==null)||(fname.value=="")){
		alert("Please Enter Your First Name!")
		fname.focus()
		return false
	}
	if ((sname.value==null)||(sname.value=="")){
		alert("Please Enter Your Surname!")
		sname.focus()
		return false
	}
	if ((subject.value==null)||(subject.value=="")){
		alert("Please Enter a Subject!")
		subject.focus()
		return false
	}
	if ((msg.value==null)||(msg.value=="")){
		alert("Please Enter Your Message!")
		msg.focus()
		return false
	}	
	if ((email.value==null)||(email.value=="")){
		alert("Please Enter your Email Address!")
		email.focus()
		return false
	}
	if (echeck(email.value)==false){
		email.value=""
		email.focus()
		return false
	}
	return true
 }