var oMarquee = document.getElementById("s_gg_titile"); //滚动对象
var iLineHeight = 27; //单行高度，像素
var iLineCount = 7; //实际行数
var iScrollAmount = 1; //每次滚动高度，像素
function run() {
        if ( oMarquee.scrollTop == iLineCount * iLineHeight-iLineHeight ){//循环的最大高度为六行高之和
                oMarquee.scrollTop = 0;
        }else{
                oMarquee.scrollTop += iScrollAmount;
        }
        if ( oMarquee.scrollTop % iLineHeight == 0 ) {
        window.setTimeout( "run()", 2000 );
        } else {
        window.setTimeout( "run()", 50 );
        }
}
oMarquee.innerHTML += oMarquee.innerHTML;
window.setTimeout( "run()", 2000);