// JavaScript Document

/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

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.DiamondOrder.txtEmail
	var DrefID=document.DiamondOrder.txtDref
	var nameID=document.DiamondOrder.txtName
	var telID=document.DiamondOrder.txtTel
	var celID=document.DiamondOrder.txtCel
		
	if ((DrefID.value==null)||(DrefID.value=="")){
		alert("Please quote the reference number(s) of the diamond(s) you wish to order.")
		//nameID.value=""
		DrefID.focus()
		return false
	}
	if ((nameID.value==null)||(nameID.value=="")){
		alert("Please provide your name and surname.")
		//nameID.value=""
		nameID.focus()
		return false
	}
	if ((telID.value==null)||(telID.value=="")){
		alert("Please provide a contact telephone number.")
		telID.focus()
		return false
	}
	if ((celID.value==null)||(celID.value=="")){
		alert("Please provide your mobile number.")
		celID.focus()
		return false
	}
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please provide your email address.")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		//emailID.value=""
		emailID.focus()
		return false
	}
	return jcap()
	return true
 }