A list of fixed-height children view
the child view's height must be fixed,otherwise can not calculate the total of height.
// the parentNode of all the children view's container
fixList = new FixedList(parentNode);
// if you have a function to generate the content html, you also can use this:
fixList =new FixedList(parentNode,content,getChildContent);
// the first param is cols, and the second param is the number of children view you want to show
fixList.initList(2, 8);
// datas can be object, array and string.
fixList.refreshData(datas);
fixList.refreshPart(data,1,10,20);