[OpenLayers-Users] Re: Mouse position coordinates

[Graham Gauld]

For anybody interested...

I've tracked down the cause of the mouse pointer offset problem I was
having.

It seems to result from the OpenLayers map being inside an HTML <table>
element whose border attribute is set to the value '1' (e.g. <table
border="1"><tr><td><div id="map" style="width: 700px; height:
400px;"></div></td></tr></table>).

The solution is to set the 'border' value to zero. HTML tables are used to
structure the layout of my page, and every table in which the map <div> is
contained had to have its 'border' value set to zero.

For example:


     
----------------------------------------------------------------------------
      | TABLE 1                                                                                          
|
      |                                                                                                     
|
      |
-----------------------------------------------------------------------  |
      | | TABLE 2 (command buttons)                                                         
|  |
      |
-----------------------------------------------------------------------  |
      |
-----------------------------------------------------------------------  |
      | | TABLE 3 - contains map <div>                                                      
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      | |                                                                                               
|  |
      |
-----------------------------------------------------------------------  |
      |
-----------------------------------------------------------------------  |
      | | TABLE 4  (other content)                                                             
|  | 
      | |                                                                                                
|  | 
      | |                                                                                                
|  | 
      | |                                                                                                
|  | 
      | |                                                                                                
|  | 
      | |                                                                                                
|  | 
      |
-----------------------------------------------------------------------  |
     
----------------------------------------------------------------------------


In the above, tables 1 and 3 both had to have their 'border' value set to
zero.

I would be interested to hear if anybody knows why a non-zero value for the
'border' attribute might cause this problem, or of possible workarounds to
allow a border to be displayed around tables containing the map (my page
doesn't look right now without borders displayed).

Graham.

--
View this message in context: http://osgeo-org.1803224.n2.nabble.com/Mouse-position-coordinates-tp6625649p6652662.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.