调试易

比如 我想取 http://www.gtjaqh.com 左边的   沪深300 | 恒生指数 | 新富A50 包括其图表，
按照其源码，里面都是结合了javascript的函数，
请问有没有办法取得里面的数据--也就是图表<a name="linkbtn" href="javascript:changepic('000300','17','http://www.99qh.com/service/trend/Trend.aspx?ClientId=gtjaqh')" id=btn000300>沪深300</a>&nbsp;|&nbsp;<a name="linkbtn" href="javascript:changepic('HSKIW','82','http://www.99qh.com/service/trend/Trend.aspx?ClientId=gtjaqh')" id=btnHSKIW>恒生指数</a>&nbsp;|&nbsp;<a name="linkbtn" href="javascript:changepic('FTS50W','82','http://www.99qh.com/service/trend/Trend.aspx?ClientId=gtjaqh')" id=btnFTS50W>新富A50</a>
function changepic(goodscode,exchcode,url)
{
var myiframe = document.getElementById("Myiframe");
var height = "190";
var width = "200";
var datatype = "min";
var dataarea = "1y";
var mysrc = url + "&ExchangeId=" + exchcode + "&TradeCode=" + goodscode 
+ "&DataType=" + datatype + "&DataArea=" + dataarea 
+ "&Height=" + height + "&width=" + width;
myiframe.src = mysrc;
chengestyle(goodscode);

}
function chengestyle(goodscode)
{
var objs = document.getElementsByName("linkbtn");
for(var i=0;i<objs.length;i++)
{
objs[i].style.fontWeight="";
if(objs[i].id=="btn"+goodscode)
{
objs[i].style.fontWeight="bold";
}
}
}