>>Thank you (and Viv). For me it is important to log the IP of a user who submits within several seconds. Basically I am troubleshooting the following issue. Users submits duplicate orders by Submitting and then clicking on Back and Submitting again. They claim that they don't do it. And the only way I can prove to them (and to myself) is by logging every Submit with the IP and order number. So two submits within seconds with the consecutive order numbers and the same "IP" will show the trend.
>
>Try to disable the button before submitting the request. That should resolve most of those duplicate-type hits.
>
>Here is an example:
>
>

><input type="submit" name="LabelSubmit" value="Cancel" onclick="ButtonOperation(this,'ViewPageGenericConfirmationMessage.aspx');
> return false;" id="LabelSubmit" style="width:150px;" />
>
>function ButtonOperation(toButton,tcUrl,tcMessage)
>{
>   toButton.disabled=true
>   lcMessage=''
>   lcUrl=''
>   if (tcUrl==null)
>   {
>      lcUrl=''
>   }
>   else
>   {
>      lcUrl=tcUrl
>   }
>   if (tcMessage==null)
>   {
>      lcMessage=''
>   }
>   else
>   {
>      lcMessage=tcMessage
>      lcMessage=lcMessage.replace('\\','\\\\')
>      lcMessage=lcMessage.replace("'","\\'")
>      lcMessage=lcMessage.replace('"','\\"')
>   }
>   if (lcMessage.length>0)
>   {
>      if (confirm(lcMessage))
>      {
>         if (lcUrl.length>0)
>         {
>            location.href=lcUrl
>         }
>         else
>         {
>            loForm=document.getElementById("Form1")
>            loForm.submit()
>         }
>      }
>      else
>      {
>         toButton.disabled=false
>      }
>   }
>   else
>   {
>      if (lcUrl.length>0)
>      {
>         location.href=lcUrl
>      }
>      else
>      {
>         loForm=document.getElementById("Form1")
>         loForm.submit()
>      }
>   }
>}
>

>
>It does not have to be that complicated. It is just that I want to support a confirmation message sometimes so I built a generic javascript function for that.

First, thank you for the sample code. As I mentioned to Viv, when user submits an order, the Acknowledgment is shown. And it clearly says that the order has been received. But users, for whatever reason, can click on Back button (in the browser) and return right back to the Order page. The order page "does not know" that this is a duplicate order and user can Submit it again.