/*
$Id: general.js 3 2006-05-27 04:59:07Z user $

  osCommerce, Open Source E-Commerce Solutions
  http://www.oscommerce.com

  Copyright 2006 osCMax

  Released under the GNU General Public License
*/

function SetFocus(TargetFormName) {
  var target = 0;
  if (TargetFormName != "") {
    for (i=0; i<document.forms.length; i++) {
      if (document.forms[i].name == TargetFormName) {
        target = i;
        break;
      }
    }
  }

  var TargetForm = document.forms[target];
    
  for (i=0; i<TargetForm.length; i++) {
    if ( (TargetForm.elements[i].type != "image") && (TargetForm.elements[i].type != "hidden") && (TargetForm.elements[i].type != "reset") && (TargetForm.elements[i].type != "submit") ) {
      TargetForm.elements[i].focus();

      if ( (TargetForm.elements[i].type == "text") || (TargetForm.elements[i].type == "password") ) {
        TargetForm.elements[i].select();
      }

      break;
    }
  }
}

function RemoveFormatString(TargetElement, FormatString) {
  if (TargetElement.value == FormatString) {
    TargetElement.value = "";
  }

  TargetElement.select();
}

function CheckDateRange(from, to) {
  if (Date.parse(from.value) <= Date.parse(to.value)) {
    return true;
  } else {
    return false;
  }
}

function IsValidDate(DateToCheck, FormatString) {
  var strDateToCheck;
  var strDateToCheckArray;
  var strFormatArray;
  var strFormatString;
  var strDay;
  var strMonth;
  var strYear;
  var intday;
  var intMonth;
  var intYear;
  var intDateSeparatorIdx = -1;
  var intFormatSeparatorIdx = -1;
  var strSeparatorArray = new Array("-"," ","/",".");
  var strMonthArray = new Array("jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec");
  var intDaysArray = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

  strDateToCheck = DateToCheck.toLowerCase();
  strFormatString = FormatString.toLowerCase();
  
  if (strDateToCheck.length != strFormatString.length) {
    return false;
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strFormatString.indexOf(strSeparatorArray[i]) != -1) {
      intFormatSeparatorIdx = i;
      break;
    }
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strDateToCheck.indexOf(strSeparatorArray[i]) != -1) {
      intDateSeparatorIdx = i;
      break;
    }
  }

  if (intDateSeparatorIdx != intFormatSeparatorIdx) {
    return false;
  }

  if (intDateSeparatorIdx != -1) {
    strFormatArray = strFormatString.split(strSeparatorArray[intFormatSeparatorIdx]);
    if (strFormatArray.length != 3) {
      return false;
    }

    strDateToCheckArray = strDateToCheck.split(strSeparatorArray[intDateSeparatorIdx]);
    if (strDateToCheckArray.length != 3) {
      return false;
    }

    for (i=0; i<strFormatArray.length; i++) {
      if (strFormatArray[i] == 'mm' || strFormatArray[i] == 'mmm') {
        strMonth = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'dd') {
        strDay = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'yyyy') {
        strYear = strDateToCheckArray[i];
      }
    }
  } else {
    if (FormatString.length > 7) {
      if (strFormatString.indexOf('mmm') == -1) {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mm'), 2);
      } else {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mmm'), 3);
      }

      strDay = strDateToCheck.substring(strFormatString.indexOf('dd'), 2);
      strYear = strDateToCheck.substring(strFormatString.indexOf('yyyy'), 2);
    } else {
      return false;
    }
  }

  if (strYear.length != 4) {
    return false;
  }

  intday = parseInt(strDay, 10);
  if (isNaN(intday)) {
    return false;
  }
  if (intday < 1) {
    return false;
  }

  intMonth = parseInt(strMonth, 10);
  if (isNaN(intMonth)) {
    for (i=0; i<strMonthArray.length; i++) {
      if (strMonth == strMonthArray[i]) {
        intMonth = i+1;
        break;
      }
    }
    if (isNaN(intMonth)) {
      return false;
    }
  }
  if (intMonth > 12 || intMonth < 1) {
    return false;
  }

  intYear = parseInt(strYear, 10);
  if (isNaN(intYear)) {
    return false;
  }
  if (IsLeapYear(intYear) == true) {
    intDaysArray[1] = 29;
  }

  if (intday > intDaysArray[intMonth - 1]) {
    return false;
  }
  
  return true;
}

function IsLeapYear(intYear) {
  if (intYear % 100 == 0) {
    if (intYear % 400 == 0) {
      return true;
    }
  } else {
    if ((intYear % 4) == 0) {
      return true;
    }
  }

  return false;
}

function email(first, last, mailto)
{
	var last = (last == false) ? "co.nz" : last;
    var first = (first == false) ? "info" : first;
	var mailto = (mailto == false) ? "" : "mailto:";
	var domain = 'arcweld';
	return mailto+first+'@'+domain+'.'+last;
}

function fncValidateForm(objForm) {
	var strEmptyMsg = "";
	var strErrorMsg = "";
	var intErrors = 0;
	
	//validates email address
	var reString = /^(\w+([-.]\w)*)+[@]\w+(([-]\w+)*[.]\w+)+$/;
	var regex = new RegExp(reString);
	var strValidSample = "aaa.bbbbbb@cccc.ddd";
	var strEmail = new String(objForm.email.value);
	
	if (strValidSample.search(regex) == -1) {
		// this is netscape 4.x or early IE 5.0x
		// we'll check for a @, the presence of spaces, a length of at least 6 (a@b.co is the smallest valid email string), the presence of a .
		if((strEmail.indexOf("@") == -1) || (strEmail.indexOf(" ") > -1) || (strEmail.length < 6) || (strEmail.length == 0)  || (strEmail.indexOf(".") == -1)) {
			strEmptyMsg += " --> Email\n";
			intErrors++;
		}
	} else {
		if (objForm.email.value.search(regex) == -1 || strEmail.length == 0) {
			strEmptyMsg += " --> Email\n";
			intErrors++;
		}
	}
	
	function validateFields(str, error) {
		// check all fields to see if they contain disallowed characters
		if (str.indexOf("@") >= 0 || str.indexOf(":") >= 0 || str.indexOf(";") >= 0 || str.split("http").length-1 > 1 )  {
			strErrorMsg += " --> "+error+"\n";
			intErrors++;
		}
	}
	
	// get variables from the form
	var strName = new String(objForm.name.value);
	var strPhone = new String(objForm.phone.value);
	var strComments = new String(objForm.comments.value);
	
	// check all compulsory fields to see if empty
	if (strName.length == 0) {
		strEmptyMsg += " --> Name\n";
		intErrors++;
	}
	if (strPhone.length == 0) {
		strEmptyMsg += " --> Phone\n";
		intErrors++;
	}
	
	// function that checks all fields for disallowed characters
	validateFields (strName, 'Name');
	validateFields (strPhone, 'Phone');
	validateFields (strComments, 'Comments');

	// checking any checboxes which need to be checked
	if (objForm.consent.checked != true) {
	strEmptyMsg += " --> Please tick the consent checkbox\n";
	intErrors++
	}
	
	// if there are any errors show these
	if(intErrors > 0) {
		var message = '';
		if(strEmptyMsg != '') message = message + "Please fill in the following fields:\n" + strEmptyMsg + "\n";
		if(strErrorMsg != '') message = message + "Please remove the characters : ; or @ and any instances of 'http' in the following fields:\n" + strErrorMsg + "\n";
		
		alert(message);
		return false;
	} else {
		// return true if all ok and send email
		return true;
	}

}