高亮度显示所选择表格的某一行

function HighlightTable_OnClick(theTable)...{
    var className = "DataGridSelectedItemStyleForList";
    var oSource=window.event.srcElement;
    var idNameForRowIndex = "window.saveRowIndex"+theTable.id
    var idNameForClassNameArray = "window.saveClassNameArray"+theTable.id
    var lastRowIndex = eval(idNameForRowIndex);
    var lastClassNameArray = eval(idNameForClassNameArray);

    if(typeof(oSource)!="undefined")...{
        var oParent = oSource.parentElement;
        for(var i=0;i<20;i++)...{
            if(typeof(oParent)!="undefined")...{
                 if(oParent.tagName=="TR" && oParent.rowIndex!=0)...{
                    var currentTable = GetTableObject(oParent);
                     if (currentTable.id==theTable.id && oParent.children[0].className!=className)...{
                        var oldClassNameArray = new Array(oParent.children.length);
                        for(var j=0;j<oParent.children.length;j++)...{
                            var currentChild = oParent.children[j];
                            if(typeof(currentChild)!="undefined" && currentChild.tagName=="TD")...{
                                oldClassNameArray[j]=currentChild.className;
                                currentChild.className=className;
                            }
                        }
                        if(typeof(lastRowIndex)!="undefined")...{
                            var lastRow = theTable.rows[lastRowIndex];
                            for(var j=0;j<lastRow.children.length;j++)...{
                                var currentChild = lastRow.children[j];
                                currentChild.className = lastClassNameArray[j];
                            }
                        }
                        eval(idNameForRowIndex+"=oParent.rowIndex;");
                        eval(idNameForClassNameArray+"=oldClassNameArray;");
                        break;
                    }
                 }
                 else...{
                    oParent=oParent.parentElement;
                 }
            }
            else
                break;
        }
    }
}