function getSeries(val)
{
 
$.ajax({
   type: "POST",
   url: "{--HTTP_PATH--}Parts/sell_your_laptop.php",
   data: "brand_id="+val,
   success: function(msg){
   	if(val!=0){
   	var series = '<select class="dropdownstyle" name="series" id="series" onchange="getModels(this.value)" ><option value="0">Select Series</option>'+msg+'</select>';
   
   $("#seriesdiv").html(series);
   	}
   	else
   	{
   	 var series = '<select class="dropdownstyle" name="series" id="series" ><option value="0">Select Series</option></select>';
   
   $("#seriesdiv").html(series);
   	}
   }
 });
}
function getModels(val)
{
 
$.ajax({
   type: "POST",
   url: "{--HTTP_PATH--}Parts/sell_your_laptop.php",
   data: "series_id="+val,
   success: function(msg){
   		if(val!=0){
   	var series = '<select class="dropdownstyle" name="models" id="models" ><option value="0">Select Model</option>'+msg+'</select>';
   
   $("#modeldiv").html(series);
   		}else
   	{
   	 var series = '<select class="dropdownstyle" name="models" id="models" ><option value="0">Select Model</option></select>';
   
   $("#modeldiv").html(series);
   	}
   }
 });
}
function validate_form(thisform)
{
	if($("#name").val()=="")
	{
		alert("Please enter name.");
		$("#name").focus();
		return false;
	}
	if($("#email").val()=="")
	{
		alert("Please enter email.");
		$("#email").focus();
		return false;
	}
	if($("#email").val()!="")
	{
		with (thisform)
		  {
		  if (validate_email(email,"Not a valid e-mail address!")==false)
		    {email.focus();return false;}
		  }
	}
	if($("#brands").val()=="")
	{
		alert("Please enter brand.");
		$("#brands").focus();
		return false;
	}
	if($("#series").val()=="")
	{
		alert("Please enter series.");
		$("#series").focus();
		return false;
	}
	if($("#models").val()=="")
	{
		alert("Please enter model.");
		$("#models").focus();
		return false;
	}
	if($("#qty").val()=="")
	{
		alert("Please enter quantity.");
		$("#qty").focus();
		return false;
	}
	if($("#qty").val()!="")
	{
		if ( isNaN($("#qty").val()) )	 
		{
			alert( "Please enter a valid number!" );
			$("#qty").focus();
			return false;	
		}
	}
	 
	
	
	
}
function validate_email(field,alerttxt)
{
with (field)
  {
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {alert(alerttxt);return false;}
  else {return true;}
  }
}