select解决方法

select
<select   name= "username "   onChange= "javascript:deleteinfor( 'admin_chkinfor.asp?action=deleteinfor&username= <%=request( "username ")%> '); ">

请问action后面的语句要怎么写才能获得select的username值?

------解决方案--------------------
<select name= "username " onChange= "javascript:deleteinfor( 'admin_chkinfor.asp?action=deleteinfor&username= '+this.value); ">