var form = "";
var submitted = false;
var error = false;
var error_message = "";

function check_input(field_name, field_size, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value.length < field_size) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_email(field_name, message) {
	if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
		var field_value = form.elements[field_name].value;
		
		if((field_value.search(/\S/)!=-1) && ((/^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z.]{2,5}$/).exec(field_value)==null)){
			error_message = error_message + "* " + message + "\n";
			error = true;
		}
	}
}

function check_radio(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].checked == true) {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}

function check_checkbox(field_name, message) {
	var isChecked = false;
	
	if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
		var checkbox = form.elements[field_name];
		
		if(checkbox.length)
		{ //multiple checkboxes
			for(i=0;i<checkbox.length;i++)
			{
				if (checkbox[i].checked == true) {
					isChecked = true;
				}	
			}
		}
		else
		{ //single checkbox
			if (checkbox.checked == true) {
				isChecked = true;
			}	
		}
		
		if (isChecked == false) {
			error_message = error_message + "* " + message + "\n";
			error = true;
		}
	}
}

function check_select(field_name, field_default, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == field_default) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}
function check_numeric(field_name, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value.length>1 && isNaN(field_value)) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}
 
  
function check_register(form_name) {
  if (submitted == true) {
    alert("This form is already submitted, please wait until the page refreshes.");
    return false;
  }

  error = false;
  form = form_name;
  error_message = "Error : Please correct the following\n";
  check_input('customer_name',2,'Please enter your name.');
  check_input('company_name',2,'Please enter company name.');
  check_input('customer_address',4,'Please enter your address.');
  check_input('customer_country',1,'Please enter your country.');
  check_input('customer_state',1,'Please enter your state.');
  check_input('customer_city',1,'Please enter your city.');
  check_input('customer_zipcode',1,'Please enter zip / postcode.');
  check_input('customer_email',4,'Please enter your email address.');
  check_email('customer_email', 'Please enter valid email.');
  /*-----------------------For flooring project-------------------------*/
  check_radio('square_footage','Please select square footage of project')
  check_radio('project_concrete','Please select concrete project area')
  check_radio('area_condition','Please select condition of area')
  check_radio('currently_coated','Please select concrete currently coated')
  check_radio('currently_coated_thickness','Please select thickness')
  check_radio('desired_thickness','Please select desired thickness')
  check_input('projected_time',1,'Please enter projected time')
/*----------------------------------------------------------------*/
/*-----------------------For lining project-------------------------*/

check_input('tank_size_length',2,'Please enter tank length.');
check_input('tank_size_width',2,'Please enter tank width.');
check_input('tank_size_height',2,'Please enter tank height.');
check_input('tank_contents',2,'Please enter tank contents.');
check_input('tank_id',2,'Please enter tank id number.');
check_radio('open_top','Please specify tank open or not')
check_input('manways',2,'Please enter location of manways.');
check_input('number_openings',2,'Please enter number of openings.');
check_input('accessibility',2,'Please enter accessibility.');
check_input('tank_location',2,'Please enter tank location.');
check_radio('construction_material','Please enter construction material.');
check_input('temperature',2,'Please enter normal operating temperature.');
check_input('schedule',2,'Please enter schedule.');
check_input('budget',2,'Please enter budget.');
check_radio('drawings','Please specify drawings available or not.');
check_input('system',2,'Please enter Specific system you would like quoted.');
check_radio('insulated','Please specify tank insulated or not.');
check_radio('project_location','Please enter location where work will be done.');
/*----------------------------------------------------------------*/


 

  if (error == true) {
    alert(error_message);
    return false;
  } else {
    submitted = true;
    return true;
  }
}