var current_safe_image_index = 1;
function swap_safe_image()
{

	if(safe_image_src_array.length <= current_safe_image_index)
	{
		current_safe_image_index = 0; //reset to the begining
	}

	document.getElementById("safeImage").src = safe_image_src_array[current_safe_image_index];
	document.getElementById("safeImageText").innerHTML = safe_image_text_array[current_safe_image_index];
	
	current_safe_image_index++;
}


function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}


function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.id; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}


function validate_credit_card_info()
{
 	var errors='';
 	
 	for(i=0; i<MM_findObj('c_type').length; i++)
 	{
 		if(MM_findObj('c_type')[i].checked)
 		{
 			var enteredType = MM_findObj('c_type')[i].value;
 			break;
 		}
 	}
 	
 	var enteredName = document.getElementById('c_holder').value;
 	var enteredccnum = document.getElementById('c_number').value;
 	var enteredYear = document.getElementById('c_exp_date_year').value;
 	var enteredMonth = document.getElementById('c_exp_date_month').value;
// 	var enteredcvid = document.getElementById('c_scode').value;

 	
 	//check card holder
 	if(enteredName.length == 0)
 		errors += 'Card holder name is required.\n';
 	
 	//check card number
	
	if(enteredccnum.length < 5 || isNaN(parseInt(enteredccnum)))
		errors += 'The '+enteredType+' card number you entered is not valid.\n';

	//check expiration date
 	var thisyear = MM_findObj('c_exp_date_year')[0].value; //1st index of year is always current
 	var thismonth = MM_findObj('current_month').value; //get month set by php

	if(parseInt(enteredYear) <= parseInt(thisyear))
 	{
 		if(parseInt(enteredYear) < parseInt(thisyear))
 			errors += 'Your credit card expiration date is expired.\n';
 		else
 			if(enteredMonth < thismonth)
 				errors += 'Your credit card expiration date is expired.\n';
 	}
	
 	//check security code
 	//if(enteredcvid.length < 2)
 		//errors += 'Your security code is invalid.\n';
		
	if(errors)
	{
		alert(errors);
		return false;
	}
	else
	{
		return true;
	}

}