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("Please enter a valid email");
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email");
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   alert("Please enter a valid email");
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email");
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   alert("Please enter a valid email");
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		  alert("Please enter a valid email");
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email");
		    return false
		 }

 		 return true					
	}

function ValidateEmail(){

	var email=document.MYFORM.txtEmail;
			
		//alert(document.MYFORM.txtEmail.value);
		
	if ((email.value==null)||(email.value=="")){
		alert("Please Enter your Email ID");
		email.focus();
		return false;
	}
	if (echeck(email.value)==false){
	
		email.value="";
		email.focus();
		return false;
	}
			alert("test");
	document.getElementById('MYFORM').method="post";
	document.getElementById('MYFORM').action="emailstore.php";
	document.getElementById('MYFORM').submit();
	
}