PHP input 창 배경 관련

<SCRIPT-x LANGUAGE="JavaScript-x">
<!--
var pw = false;
function change_02()
{
if ( pw ) return;
document.oForm.pwdPassWord.style.backgroundImage="";
pw=true;
}
//-->
</SCRIPT-x>


<input name="pwdPassWord" type="password" onMouseDown="return change_02();" onKeyDown="return change_02();" tabindex="2" class="v12" style="width:148px; height:18px; background-color:#E8E8E8; background-image: url(/img/common/login/img_login_pw.gif); background-repeat: no-repeat; background-position: left center; border:none;">