// JavaScript Document

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 ValidateForm(){
	var emailID=document.checkout_1.email
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email address")
		emailID.focus()
		return false
	}
	
	var nameID=document.checkout_1.name
	
	if ((nameID.value==null)||(nameID.value=="")){
		alert("Please Enter your Name")
		nameID.focus()
		return false
	}
	
	var addressline_1ID=document.checkout_1.addressline_1
	
	if ((addressline_1ID.value==null)||(addressline_1ID.value=="")){
		alert("Please Enter your Address")
		addressline_1ID.focus()
		return false
	}
	
	var postal_codeID=document.checkout_1.postal_code
	
	if ((postal_codeID.value==null)||(postal_codeID.value=="")){
		alert("Please Enter your Postal Code")
		postal_codeID.focus()
		return false
	}
	
		var town_cityID=document.checkout_1.town_city
	
	if ((town_cityID.value==null)||(town_cityID.value=="")){
		alert("Please Enter your Town / City")
		town_cityID.focus()
		return false
	}	

	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
	
 }