table formatting cell overset

Consider the below mentioned code as Sample to improve further:

var dc=app.activeDocument;

var tbs=dc.stories[0].tables[0].columns;

//~ tbs[0].width=15;

//~ tbs[1].width=15;

if (tbs[0].cells[0].overflows==true){

    alert ("S");

    alert (tbs[0].cells[0].contents);

    }

else {

    alert ("N");

    }