<input type="text" name="QQ" size="20" tabindex="9" value= "<%=QQ %>" onKeypress="if(!/^\d*(\.\d*)?$/.test(this.value)){alert('不行');this.select();return false;}">
<input type="text" name="QQ" size="20" tabindex="9" value= "<%=QQ %>" onKeypress="if(!/^\d*(\.\d*)?$/.test(this.value)){alert('不行');this.select();return false;}">
{
if(!isNS4)
{
if(event.keyCode < 45 || event.keyCode > 57)
event.returnValue = false;
}
else
{
if(event.which < 45 || event.which > 57)
return false;
}
}