//BROWSER DETECTION
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
 

//FIELDS
function imgField(field, img){
	if(img == "over") {
		border_color 	= "#333333";
		bgcolor 		= "#F6F6F6";
	}else {
		border_color 	= "#999999";
		bgcolor 		= "#FFFFFF";
	}
	field.style.borderColor 	= border_color;
	field.style.backgroundColor = bgcolor;
}



function imgField2(field, img){
	//bgcolor
		if(img == "over") bgcolor = "#FFFFFF";
					 else bgcolor = "#FFFFFF";
		field.style.backgroundColor = bgcolor;
		
	//border color
		if(img == "over") border_color = "#333333";
					 else border_color = "#999999";
		field.style.borderColor = border_color;
}

//BUTS
function imgBut(but, img){
	but.src = img;
}


//Reset Form
function resetForm(formName){
	if(ns6) form = eval("document.getElementById('"+formName+"')");
	else if(ns4) form = eval("document."+formName);
	else form = eval("document.all."+formName);
	form.reset();
}

function clearDefault(el) {
if (el.defaultValue==el.value) el.value = ""
}




function focus2(field){
	if(field.value == 0) field.value = '';
}	


function blur2(field){
	if(field.value == '') field.value = '0';
}	


function fieldValue(field_name){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field.value;
}

function setFieldValue(field_name, val){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field.value;
	field.value = val;
}

function writeIn(field_name, val){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	field.innerHTML = val;
}



function formatNR(nr, dec)
{
str = "" + Math.round(eval(nr) * Math.pow(10,dec));
while(str.length < dec)
	str = "0" + str;
decidx = str.length - dec;
tmp = str.substring(0,decidx);
if(tmp == '')
	tmp = '0';
if(dec > 0)
	tmp = tmp + '.' + str.substring(decidx, str.length);
return(tmp);
}



function getkey(e)
{
if (window.event)
   return window.event.keyCode;
else if (e)
   return e.which;
else
   return null;
}


function goodchars(e, goods)
{
var key, keychar;
key = getkey(e);
if (key == null) return true;

// get character
keychar = String.fromCharCode(key);
keychar = keychar.toLowerCase();
goods = goods.toLowerCase();

// check goodkeys
if (goods.indexOf(keychar) != -1)
	return true;

// control keys
if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
   return true;

// else return false
return false;
}



function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return i
         }
      }
   } else {
      if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var i = getSelectedRadio(buttonGroup);
   if (i == -1) {
      return "";
   } else {
      if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
         return buttonGroup[i].value;
      } else { // The button group is just the one button, and it is checked
         return buttonGroup.value;
      }
   }
} // Ends the "getSelectedRadioValue" function

function getSelectedCheckbox(buttonGroup) {
   // Go through all the check boxes. return an array of all the ones
   // that are selected (their position numbers). if no boxes were checked,
   // returned array will be empty (length will be zero)
   var retArr = new Array();
   var lastElement = 0;
   if (buttonGroup[0]) { // if the button group is an array (one check box is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            retArr.length = lastElement;
            retArr[lastElement] = i;
            lastElement++;
         }
      }
   } else { // There is only one check box (it's not an array)
      if (buttonGroup.checked) { // if the one check box is checked
         retArr.length = lastElement;
         retArr[lastElement] = 0; // return zero as the only array value
      }
   }
   return retArr;
} // Ends the "getSelectedCheckbox" function

function getSelectedCheckboxValue(buttonGroup) {
   // return an array of values selected in the check box group. if no boxes
   // were checked, returned array will be empty (length will be zero)
   var retArr = new Array(); // set up empty array for the return values
   var selectedItems = getSelectedCheckbox(buttonGroup);
   if (selectedItems.length != 0) { // if there was something selected
      retArr.length = selectedItems.length;
      for (var i=0; i<selectedItems.length; i++) {
         if (buttonGroup[selectedItems[i]]) { // Make sure it's an array
            retArr[i] = buttonGroup[selectedItems[i]].value;
         } else { // It's not an array (there's just one check box and it's selected)
            retArr[i] = buttonGroup.value;// return that value
         }
      }
   }
   return retArr;
} // Ends the "getSelectedCheckBoxValue" function
  

//Email Validation
function emailValid(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function formSubmit(form, act){
	document.forms[form].action = act;
	document.forms[form].submit();
}





function fieldOb(field_name){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field;
}

function changeRowColor(row, color){
	rOb = fieldOb(row);
	rOb.bgColor = color;  
}






//Validates a field
function ValidateField(elem, name){
	if((elem.value == '')||(elem.value == 0))	{
    		alert('INCOMPLETE!');
    		elem.focus();
   	 		return(false);
   	}
	else if(name.indexOf('email') != -1){
			 	if(!emailValid(elem.value)){
					alert('Invalid E-mail address !');
					elem.focus();
   	 				return(false);
				}
	}
	return(true);
}

//Just Validates a field without (alert & focus)
function JustValidateField(elem){
	if((elem.value == '')||(elem.value == 0))	return(false);
	else if(name.indexOf('email') != -1){
			 	if(!emailValid(elem.value)){
   	 				return(false);
				}
	}
	return(true);
}


//Validate form for Mandatory fields to be filled properly
function Validate(form, fields){
   	mandatory_fields = fields.split(',');
	for(i=0; i<mandatory_fields.length; i++){
		
		if(mandatory_fields[i].indexOf('|')){
			//groupped fields (at least one of them must be filled/selected)
			mandatory_group_fields = mandatory_fields[i].split('|');
			valid = 0;
			for(j=0; j<mandatory_group_fields.length; j++){
				elem = eval('form.' + mandatory_group_fields[j]);
				if(ValidateField(elem, mandatory_group_fields[j]) ) valid = 1;
				else return(false);
			}
			if(!valid){
				//no fields filled
				elem = eval('form.' + mandatory_group_fields[0]);
				if(!ValidateField(elem, mandatory_group_fields[0])) return(false);
			}
			
		}else{
			//single field
			elem = eval('form.' + mandatory_fields[i]);
			if(!ValidateField(elem, mandatory_fields[i])) return(false);
		}
		
	}//for
	
	return(true);
}


function GotoPage(pag, GET){
	form = eval("document.forms['frms']");
	form.action = PHP_SELF + "?"+GET+"&pag="+pag;
	form.submit();
}

function ValidateCheckout(form){
	if(!Validate(form, 'fname,lname,address,city,state,zip,email'))
		return false;
		
	if(!form.same_shipping.checked){
		if(!Validate(form, 'shipping_fname,shipping_lname,shipping_address,shipping_city,shipping_state,shipping_zip,shipping_email'))
			return false;
	}
	
	return true;
} 

function ValidateSubmit(form, action){
	document.forms[form].action = action;
	
	if(action == '?checkout&step=2')
		if(ValidateCheckout(document.forms[form])) 
			document.forms[form].submit();
	
	if(action == '?checkout&step=4') 
		if(Validate(document.forms[form], 'cc_type,cc_nr,cc_mm,cc_yy')) 
			document.forms[form].submit();
}