jscript 怎么控制web控件的onmousemove事件

jscript 如何控制web控件的onmousemove事件
<IMG   onmousemove= "move(5) "   id= "minute5 "   style= "CURSOR:   hand "   onclick= "btminu.onclick() "onmouseout= "out(5) "   src= "image\fullstar.gif "   runat= "server ">

怎么用jscript把onmousemove事件去掉？或者动态添加

[解决办法]
document.getElementById( "minute5 ").onmouseover = null;
document.getElementById( "minute5 ").onmouseover = function(){};