i want to alert the user if they enter a number over 50

i know it goes some thing like this..


if (parseFloat(document.form1.textfield.value)>=50){
alert("please enter a number lower than 50")
}

i just can't get it to work for me.where am i going wrong..

i would like to alert them the moment they enter the number in the textfield.

which event handler do i need to use..

Hii BrainChild!!


<script>
function callme()
{
var myString = document.form1.textfield.value;

myString=trim (myString)
if(myString=="")
{
alert("Please Enter The Value")
document.form1.textfield.focus();
}
else if(isNaN(myString))
{

alert("Please Enter The Numeric Value")
document.form1.textfield.focus();
}
else if(parseFloat(myString)>50)
{
alert("Please Enter The Value Less Then Or Equal To 50")
document.form1.textfield.focus();
}

}


function ltrim ( s )
{
  return s.replace( /^\s*/, "" );
}

function rtrim ( s )
{
  return s.replace( /\s*$/, "" );
}

function trim ( s )
{
    return rtrim(ltrim(s));
}


</script>
<form name=form1>
<input type=text name=textfield>
<input type=button name=btnName value="call" onclick="callme()">
</form>




Cheers :)

vinod

thanks a lot, vinod_yadav1919 your a big help can i add you to my yahoo buddy list..