js代码

<script language="javascript">
function imgdragstart(){return false;}
for(i in document.images)document.images[i].ondragstart=imgdragstart;
</script>


<script>
$(document).ready(function(){
    $("#span1").click(function(){
		$("#box").css({"width":"30px","height":"30px"});
		});
    $("#span2").click(function(){
		$("#box").css({"width":"50px","height":"50px"});
		})
	$("#span3").click(function(){
		$("#box").css({"width":"100px","height":"100px"});
		})
});
</script> 

关注公众号，免费赠送安装视频教程、环境和学习视频，后面会不断更新。