<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">first</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">second</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">third</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">forth</input>

<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700" checked>first</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700" checked>second</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">third</input>
<input type="checkbox" name="SubCats" class="subcat-checkbox" value="18001700">forth</input>

(document).ready(function () {

    loadSubCategories();
}