// email checking

function echeck(email) {
		var str=email.value;
		var message = "Your email address is entered as " + str +"\nThis does not seem like a valid address.\nPlease enter an email address.\n";
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert(message)
		   document.customer.Email.focus();
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert(message)
		   document.customer.Email.focus();
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert(message)
		   document.customer.Email.focus();
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert(message)
		   document.customer.Email.focus();
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert(message)
		   document.customer.Email.focus();
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert(message)
		   document.customer.Email.focus();
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert(message)
		   document.customer.Email.focus();
		    return false
		 }
 		 return true					
	}