< 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 >