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function changeSubCategory() {
var sel_category = document.getElementById("category");
var sel_sub_category = document.getElementById("sub_category");
var len = sel_sub_category.length
for ( var i = 0; i < len; i++) {
sel_sub_category.remove(sel_sub_category.length - 1);
//Çå³ýÔ­ÓеÄoption
}
if (sel_category.value == "±¾¿Æ") {
var opt1 = document.createElement("option")
opt1.text = opt1.value = "±¾¿ÆÒ»Äê¼¶"
sel_sub_category.add(opt1)
var opt2 = document.createElement("option")
opt2.text = opt2.value = "±¾¿Æ¶þÄê¼¶"
sel_sub_category.add(opt2)
var opt3 = document.createElement("option")
opt3.text = opt3.value = "±¾¿ÆÈýÄê¼¶"
sel_sub_category.add(opt3)
var opt4 = document.createElement("option")
opt4.text = opt4.value = "±¾¿ÆËÄÄê¼¶"
sel_sub_category.add(opt4)
} else if (sel_category.value == "˶ʿ") {
var opt1 = document.createElement("option")
opt1.text = opt1.value = "˶ʿһÄê¼¶"
sel_sub_category.add(opt1)
var opt2 = document.createElement("option")
opt2.text = opt2.value = "˶ʿ¶þÄê¼¶"
sel_sub_category.add(opt2)
} else if (sel_category.value == "²©Ê¿") {
var opt1 = document.createElement("option")
opt1.text = opt1.value = "²©Ê¿Ò»Äê¼¶"
sel_sub_category.add(opt1)
var opt2 = document.createElement("option")
opt2.text = opt2.value = "²©Ê¿¶þÄê¼¶"
sel_sub_category.add(opt2)
}
}
// --></mce:script>


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