function doClick(buttonName,e)
{
    //the purpose of this function is to allow the enter key to 
    //point to the correct button to click.
    var key;

     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

    if (key == 13)
    {
        //Get the button the user wants to have clicked
        var btn = document.getElementById(buttonName);
        if (btn != null)
        { //If we find the button click it
            btn.click();
            event.keyCode = 0
        }
    }
}

function IsNumber(controlnameToValidate, source, arguments)
{
	var ValidChars = "0123456789.";
	var Char;
	var sText=document.getElementById(controlnameToValidate).value;
	for (i = 0; i < sText.length; i++) 
	{ 
		
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) 
		{
			arguments.IsValid = false;
			return;
		}
	}
	return;
	
}