selected标签在ie8下的隐藏显示

[m0_38057729]

******select 在ie8下的隐藏*****
function toggleOptionShow(data) {
	var arrShow;
	var obj;
	var arrHide;
	if (data == "" || data == "5" || data == "4" || data == "3") {
                //select  id 
		obj = $("#yead");
                //显示
		arrShow = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];
               //隐藏		
               arrHide = [ 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 ];

	} else if (data == "2") {
		obj = $("#yead");
		arrShow = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ];
		arrHide = [ 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 ];
	} else if (data == "1") {
		obj = $("#yead");
		arrShow = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 ];
		arrHide = [];
	}

	function arrHandle(arr, type) {
		if ($.isArray(arr)) {
			var len = arr.length;
			for (i = 0; i < len; i++) {
				var optionNow = obj.find("option").eq(arr[i]);
				var optionP = optionNow.parent("span");
				if (type == "show") {
					if (optionP.size()) {
						optionP.children().clone().replaceAll(optionP);
					}
				} else {
					if (!optionP.size()) {
						optionNow.wrap("<span style='display:none'></span>");
					}
				}
			}
		}
	}
	arrHandle(arrShow, "show");
	arrHandle(arrHide, "hide");
}