如何不让文本框自动高亮显示字体？

Question

<input><input value="dsafsadfsadf" onfocus="this.value += ''">

Answer 1

<input value="never-online.net" onfocus="this.style.color='red'" onblur="this.style.color='#000'">

Answer 2

<input><input value="dsafsadfsadf" onselectstart="return false;">

Answer 3

<script language="JScript">
function MyFocus(obj)
{
obj.value += '';
var rng = obj.createTextRange();
    rng.moveStart("character", obj.value.length);     
    rng.collapse(true);         
    rng.select();  
}
</script>
<input>
<input name=test value="abcdfdf" onfocus="MyFocus(this)">

Answer 4

<script language="JScript">
function MyFocus(obj)
{
var rng = obj.createTextRange();
rng.moveStart("character", obj.value.length);     
rng.collapse(true);         
rng.select();  
}
</script>
<input>
<input name=test value="abcdfdf" onfocus="MyFocus(this)">