Custom tooltip text in Candlestick chart of google charts -

i'm playing bit google charts api, , need change default text showed in tooltip of candlestick chart. not change style, it's content.
knows how achieve it?

try code customize tooltip content using html tags.

 data.addrows([            ['mon', 20, 28, 38, 45, customtooltip('monday')],            ['tue', 31, 38, 55, 66, customtooltip('tuesday')],            ['wed', 50, 55, 77, 80, customtooltip('wednesday')],            ['thu', 77, 77, 66, 50, customtooltip('thursday')],            ['fri', 68, 66, 22, 15, customtooltip('friday')]     ]);   function customtooltip(text) {     return '<div style="padding:5px 5px 5px 5px;">' +  '<table id="medals_layout" style=" color:#db6acf; font-size:large">' + '<tr>' +  '<td><b>' + text + '</b></td>' + '</tr>' + '</table>' + '</div>';   } 

take @ jqfaq.com has working sample line chart