滑块不可拖动或单击

Question

我在Magento 1.9网站中使用jQuery滑块。问题是我无法拖动滑块按钮，并且如果我在滑块内的任何位置单击，它将获得最大的 enter image description here

$('mw_use_max_points').observe('click', function(e){
	if(this.checked)
		mw_sider.setPointChange(<?php echo $this->getMaxPointsToCheckout()?>);
	else
		mw_sider.setPointChange(0);
});

	        		<div id="mw_reward_slider_contaner" class="mw_reward_slider_contaner">
	        			<div id="mw_reward_decr_handle"></div>
	        			<div id="mw_reward_incr_handle"></div>
	        			<div id="mw_slider" class="mw_reward_select" ></div>
	        		</div>
	        		<div class="eve-max-points-wrapper">
						<input class="eve-max-points-input" type="checkbox" name="mw_use_max_points" id="mw_use_max_points" />
						<label class="eve-max-points-label" for="mw_use_max_points">
						<?php echo $this->__("Use maximum (<b>%s</b>)",Mage::helper('rewardpoints')->formatPoints($spend_point,$store_id));?>
						</label>
					</div>