prototypejs - Getting trouble with jQuery tabs in loading openlayers map -

i've 4 jquery tabs, in second tab i'm showing map using openlayers library i'm getting following errors

uncaught typeerror: cannot call method 'clone' of null // onload error uncaught typeerror: cannot read property 'w' of null // getting  error when zooming-in , out 

i thought code went wrong in initializing openlayers map object or somewhere,but trouble jquery tabs. if i'm placing map div in first tab showing map expected.

i tried this not solved issue when placing map div in second tab.

update below content:

if write jquery tabs code after map object creation working fine in chrome map destructing in firefox.

how can call initialize jquery tabs after execution of user defined function?

you can initialize map when enter tab.

create tabs this:

 $( "#tabs" ).tabs({      activate: function(event ,ui){           if(ui.newtab.index() == 1)// tab number start 0            {                     init(); // map initial function            }      }  }); 

and define init() this:

var map; //global variable function init() {     if(map) //for create 1 map     {          return false; // if map exists return , not create map     }     ...     ... }