< html xmlns="http://www.w3.org/1999/xhtml"  > 
< head runat="server"  > 
< title  > Untitled Page< /title > 
< script > 
    function ChartFill(redid)
    {
    if (redid==1)document.getElementById("tb1").style.backgroundColor ='red';  
    if (redid==2)document.getElementById("tb2").style.backgroundColor ='green';  
    if (redid==3)document.getElementById("tb3").style.backgroundColor ='Blue';  
    }
< /script >  
< /head > 
< body > 
     < form id="form1" runat="server" > 
     < table border ="1" cellpadding ="0" cellspacing ="0" height ="60%" style="width: 2%" > 
     < tr style ="height:150px;" id="tb1" onmousemove ="ChartFill(1);" > 
     < td width ="30%"  >  < /td > 
     < /tr > 
      < tr style ="height:150px;" id="tb2" onmousemove ="ChartFill(2);" > 
     < td width ="30%"  >  < /td > 
     < /tr > 
         < tr style ="height:150px;" id="tb3" onmousemove ="ChartFill(3);" > 
     < td width ="30%"  >  < /td > 
     < /tr > 
     < /table > 
     < /form > 
 < /body > 
 < /html >