jQuery+CSS仿iPhone 电话列表，通讯录字母查找联系人功能，按住字母，会检索出匹配首字母的联系人信息，自动滚动到所属的字母开头位置。-jQuery+ CSS imitation iPhone phone list, address book contacts lookup function letter, hold the letter, will retrieve matching the first letter of the contact information automatically scrolls to the letter beginning position belongs.