/* This script and many more are available free online at
The JavaScript Source :: http://javascript.internet.com
Created by: Amit Wadhwa :: http://amitwadhwa.fcpages.com/javascript.com/formvalidator.html */

function checkThisForm(formname, submitbutton, errors) {
  if (errors == '') {
//    eval(formname+'.'+submitbutton+'.disabled=true');
    eval('document.'+formname+'.'+submitbutton+'.disabled=true');
    eval('document.'+formname+'.submit()');
  } else {
    alert(errors);
//	return false;
  }
}

function checkText(formname, textboxname, displaytext) {
  var localerror = '';
  if(Trim(eval('document.'+formname+'.'+textboxname+'.value'))=='') {
    localerror =  '- '+displaytext+' is Required.\n';
  } else localerror = '';
  return localerror;
}

function checkPasswords(formname, textboxname1, textboxname2, displaytext) {
  var localerror = '';
	var myPass1=eval('document.'+formname+'.'+textboxname1+'.value');
	var myPass2=eval('document.'+formname+'.'+textboxname2+'.value');

  if((Trim(myPass1)=='')||(Trim(myPass2)=='')) {
    localerror =  '- '+displaytext+' must not be blank.\n';
  } 
	else if ((Trim(myPass1))!=(Trim(myPass2))){
    localerror =  '- '+displaytext+' must be identical.\n';
	}
	else localerror = '';
  return localerror;
}

function checkNum(formname, textboxname, displaytext) {
	var localerror = '';
	var myNumber=eval('document.'+formname+'.'+textboxname+'.value');
//  if(isNaN(eval(myNumber))) {
  if(isNaN(myNumber)||(myNumber=='')) {
    localerror =  '- '+displaytext+' Should Be A Number With No Spaces.\n';
  } else localerror = '';
  return localerror;
}

function checkNumNotZero(formname, textboxname, displaytext) {
  var localerror = '';
	var myNumber=eval('document.'+formname+'.'+textboxname+'.value');
  if(isNaN(myNumber)||(myNumber=='')) {
    localerror =  '- '+displaytext+' Should Be A Number With No Spaces.\n';
  } 
	else if (myNumber<='0') {
		localerror =  '- '+displaytext+' Should Be A Number greater than 0.\n';
	}
	else localerror = '';

  return localerror;
}

function checkNumRange(formname, textboxname, displaytext,min,max) {

  var localerror = '';
	var myNumber=eval('document.'+formname+'.'+textboxname+'.value');

// first check if the number is a number
  if(isNaN(myNumber)||(myNumber=='')) {
    localerror =  '- '+displaytext+' Should Be A Number With No Spaces.\n';
  } 
// now check if it is within the range
	else if ((myNumber<min)||(myNumber>max)) {
    localerror =  '- '+displaytext+' Should Be A Number between '+min+' and '+max+'.\n';
	}
// otherwise the number is OK
	else localerror = '';
  return localerror;
}

function checkSpaces(formname, textboxname, displaytext) {
  var valid = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_'; // define valid characters
  var localerror = '';
  if(!isValid(Trim(eval('document.'+formname+'.'+textboxname+'.value')), valid)) {
    localerror =  '- '+displaytext+' Should Not Contain Spaces.\n';
  } else localerror = '';
  return localerror;
}

function checkSelect(formname, selectboxname, displaytext) {
  var localerror = '';
  if(eval('document.'+formname+'.'+selectboxname+'.selectedIndex')==0) {
    localerror =  '- '+displaytext+' is Required.\n';
  } else localerror = '';
  return localerror;
}

function getRadio(formname, radioname, displaytext) {
  for (var i=0; i < eval('document.'+formname+'.'+radioname+'.length'); i++) {
    if (eval('document.'+formname+'.'+radioname+'[i].checked')) {
      var rad_val = eval('document.'+formname+'.'+radioname+'[i].value');
      return rad_val;
    }
  }
}

function checkRadio(formname, radioname, displaytext) {
  var localerror = '';
  var rad_val    = '';
  for (var i=0; i < eval('document.'+formname+'.'+radioname+'.length'); i++) { //check every radio button by that name
    if (eval('document.'+formname+'.'+radioname+'[i].checked'))  { //if it is checked
      rad_val += '-';
      }	else rad_val += '';
      }
    if (rad_val=='') {
      localerror =  '- '+displaytext+' is Required.\n';
    }
  return localerror;
}

function checkCheckArray(formname, array_name, displaytext) {
/*
	var localerror = '';
	var array_ref = document.getElementsByName(array_name);

	var isChecked=false;
	for (i=0;i<array_ref.length;i++) {
      if (array_ref[i].checked==true){
			isChecked=true;
		}
  }
	if (isChecked==false){
		localerror =  '- '+displaytext+'\n';
	}
  return localerror;
*/


	var localerror = '';
	var myCheckBoxName= array_name+'[]';
	var isChecked=false;

	var formRef=eval('document.'+formname);
	with (formRef) {

//alert (elements.length+'-'+myCheckBoxName);

	for (var i=0; i < elements.length; i++) {
		if (elements[i].type == 'checkbox' && elements[i].name == myCheckBoxName){
			if (elements[i].checked==true){
				isChecked=true;
			}
		}
	}
	if (isChecked==false){
		localerror =  '- '+displaytext+'\n';
	}

  return localerror;

	}
}
function autoComplete (field, select, property) {
/*onKeyUp="autoComplete(this,this.form.selectboxname,'value',false)" - add this to textbox where you are typing*/
  var found = false;
  for (var i = 0; i < select.options.length; i++) {
    if (select.options[i][property].toUpperCase().indexOf(field.value.toUpperCase()) == 0) {
      found=true; break;
    }
  }
  if (found) {
    select.selectedIndex = i;
  } else {
    select.selectedIndex = -1;
  }
  if (field.createTextRange) {
    if (!found) {
      field.value=field.value.substring(0,field.value.length-1);
      return;
    }
    var cursorKeys ="8;46;37;38;39;40;33;34;35;36;45;";
    if (cursorKeys.indexOf(event.keyCode+";") == -1) {
      var r1 = field.createTextRange();
      var oldValue = r1.text;
      var newValue = found ? select.options[i][property] : oldValue;
      if (newValue != field.value) {
        field.value = newValue;
        var rNew = field.createTextRange();
        rNew.moveStart('character', oldValue.length) ;
        rNew.select();
      }
    }
  }
}

function Trim(s) {
  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r')) {
    s = s.substring(1,s.length);
  }
  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r')) {
    s = s.substring(0,s.length-1);
  }
  return s;
}

function isValid(string,allowed) {
//  var valid = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; // define valid characters
    for (var i=0; i< string.length; i++) {
      if (allowed.indexOf(string.charAt(i)) == -1) return false;
    }
    return true;
}