Thread: javascript problem

<script>
function show1()
{
var randomnumber=Math.floor(Math.random()*21);
var randomnumber1=Math.floor(Math.random()*31);
var randomnumber2=Math.floor(Math.random()*41);
var randomnumber3=Math.floor(Math.random()*51);
var randomnumber4=Math.floor(Math.random()*101);
document.form1.text4.value=randomnumber3;
document.form1.text3.value=randomnumber2;
document.form1.text2.value=randomnumber1;
document.form1.text1.value=randomnumber;
document.form1.text5.value=randomnumber4;
document.form1.text1.focus();

}
</script>
//calling on buttons of form to store values in text box (text1,text2,text3,text4,text5)

problem is that when i am calling above function on buttons it shows result in textbox but value autometically get refreshed.

can any one help me????????????????????????

thanks for reply!!!!!!!!!!!!!!