// JavaScript Document

function validate()
{
	if ((document.getElementById('other').value == '') && (window.document.pp.amount[0].checked == false &&
	window.document.pp.amount[1].checked == false &&
	window.document.pp.amount[2].checked == false &&
	window.document.pp.amount[3].checked == false &&
	window.document.pp.amount[4].checked == false &&
	window.document.pp.amount[5].checked == false))
	{
		alert("Please select or enter a donation amount before clicking the Donate Button");
		return false;
	}
	
	return true;
}

function validatenumber(event, obj)
{
    var code = (event.which) ? event.which : event.keyCode;
    var character = String.fromCharCode(code);
 
    if ((code >= 48 && code <= 57))
    { // check digits
 
      // Disallow all numbers if the entry is 0
      if (obj.value == "0")
        return false;
 
      if (!isNaN(obj.value))
      {
        if (obj.value == "0.0" && code == 48)
        {
          alert("Value cannot be less than 0.01");
          return false;
        }
      }
 
      return true;
    }
    else if (code == 46)
    { // Check dot
      if (obj.value.indexOf(".") < 0)
      {
        if (obj.value.length == 0)
         obj.value = "0";
 
        return true;
      }
    }
    else if (code == 8 || code == 116)
    { // Allow backspace, F5
      return true;
    }
    else if (code >=37 && code <= 40)
    { // Allow directional arrows
      return true;
    }
 
    return false;
}
 
function validatefield(obj)
{ // Remove dot if last character
    if (obj.value.indexOf(".") == obj.value.length-1)
    {
      obj.value = obj.value.substring(0, obj.value.length-1)
    } // Clear text box if not a number, incase user drags/drop letter into box
    else if (isNaN(obj.value))
    {
      obj.value = "";
    }
    else if (obj.value <= 0.01)
    {
      obj.value = "";
      alert("Value cannot be less than 0.01.");
    }
}

function clearvalue(f)
{
	document.getElementById(f).value = '';
}

function clearradio()
{
	window.document.pp.amount[0].checked = false;
	window.document.pp.amount[1].checked = false;
	window.document.pp.amount[2].checked = false;
	window.document.pp.amount[3].checked = false;
	window.document.pp.amount[4].checked = false;
	window.document.pp.amount[5].checked = false;
}