为什么加载jsp时,Applet会提交整个表单?

Question

关键代码

 <applet CodeBase="<%=request.getContextPath() %>/lis/mz/" code=CodeApplet.class width=300 height=50 VIEWASTEXT
                                                archive="/lis/lis/mz/commons-codec-1.4.jar,/lis/lis/mz/commons-httpclient-3.0.1.jar,/lis/lis/mz/commons-logging-1.1.1.jar">
                                                    <param name="xtjyid" value="<s:property value="#brcx.jyid.id"/>">
                                                    <param name="codeNum" value="<s:property value="#brcx.jyid.tmNum"/>">
                                                    <param name="zdjymxid" value="<s:property  value="#brcx.id" />">
                                                    <param name="xtjyName" value="<s:property  value="#brcx.jyid.name" />">
                                                    <param name="patientName" value="<s:property value="#brcx.zdid.mzGh.patientcard.name" />">
                                                    <param name="mzpatientid" value="<s:property value="#brcx.zdid.mzGh.patientcard.id" />">
                                                </applet>

 <input type="button" value="打印" onclick="dy()"/>

 <script type="text/javascript">
function dy(){
document.applets[0].inputCodeInfo();
}
</script>