将上拉列表框做成只读

将下拉列表框做成只读
<span onmousemove="this.setCapture();" onmouseout="this.releaseCapture();">
        <g:select onfocus="this.blur();" from="${session.pinfoList}" optionKey="projectName" optionValue="projectName"  noSelection="${['ALL':'全部']}" value="${params?.projectName}"  name="projectName"/>
</span>


onmousemove="this.setCapture();"
onmouseout="this.releaseCapture();"
onfocus="this.blur();"