function Site_Utility() {
  this.loaded = 0;
  
  this.staff_access = 0;
}

function site_utility_initialize() {
  with (this) {
    if (Site.loaded == 1) {
      loaded = 1;
      root = "http://www.gmf.ca/";
    } else {
      window.setTimeout('Utility.Initialize()',10);
    }
  }
}

function site_utility_inventory_selectcompany(c) {
  with (this) {
    if ($('inventory_add_form') && $('inventory_add_update') && $('inventory_add_company')) {
      $('inventory_add_update').value = "1";
      $('inventory_add_company').value = c;
      $('inventory_add_form').submit();
    }
  }
}

function site_utility_categories(opt,r) {
  var Lists = [];
  var NewItem;
  var new_value = "";
  var new_text = "";
  var new_list = new Array();
  var new_list_text = new Array();
  var found = false;
  var total = 0;
  
  with (this) {
    Lists['available'] = $('categories_available');
    Lists['selected'] = $('categories_selected');
    Lists['new'] = $('categories_new');
    Lists['final'] = $('category_list');
    
    if (Lists['available'] && Lists['selected'] && Lists['final']) {
      switch (opt) {
      case "add":
        if (Lists['available'].selectedIndex > -1 && Lists['selected'].options.length < 15) {
          new_value = Lists['available'].options[Lists['available'].selectedIndex].value;
          new_text = Lists['available'].options[Lists['available'].selectedIndex].text;
          
          if (Lists['selected'].options.length == 0) {
            found = false;
          } else {
            for (i = 0; i < Lists['selected'].options.length; i++) {
              if (new_value == Lists['selected'].options[i].value) {
                found = true;
              }
            }
          }
          
          if (found === false) {
            NewItem = document.createElement('OPTION');
            NewItem.text = new_text;
            NewItem.value = new_value;
            
            Lists['selected'].options.add(NewItem);
            Categories('sort',0);
          }
        }
        break;
      case "new":
        new_value = Lists['new'].value;
        new_value = new_value.replace(/[\|]/g,"");
        new_value = new_value.replace(/[,]/g,"");
        
        if (new_value.length > 0 && Lists['selected'].options.length < 15) {
          Lists['new'].value = "";
          
          if (Lists['selected'].options.length == 0) {
            found = false;
          } else {
            for (i = 0; i < Lists['selected'].options.length; i++) {
              if (new_value == Lists['selected'].options[i].value) {
                found = true;
              }
            }
          }
          
          if (found === false) {
            NewItem = document.createElement('OPTION');
            NewItem.text = new_value;
            NewItem.value = new_value;
            
            Lists['selected'].options.add(NewItem);
            Categories('sort',0);
          }
        }
        break;
      case "remove":
        if (Lists['selected'].selectedIndex > -1) {
          Lists['selected'].remove(Lists['selected'].selectedIndex);
        }
        break;
      case "sort":
        if (Lists['selected'].options.length > 0) {
          for (j = 0; j < Lists['selected'].options.length; j++) {
            new_list[j] = Lists['selected'].options[j].value;
            new_list_text[j] = Lists['selected'].options[j].text;
          }
          
          Categories('clear',0);
          new_list.sort();
          
          for (j = 0; j < new_list.length; j++) {
            NewItem = document.createElement('OPTION');
            NewItem.text = new_list_text[j];
            NewItem.value = new_list[j];
            Lists['selected'].options.add(NewItem);
          }
        }
        
        if (r == 1) {
          return new_list.join('|');
        }
        break;
      case "clear":
        if (Lists['selected'].options.length > 0) {
          total = Lists['selected'].options.length;
          for (j = total; j > -1; j--) {
            Lists['selected'].remove(j);
          }
        }
        break;
      case "result":
        Lists['final'].value = Categories('sort',1);
        break;
      }
    }
  }
}

function site_utility_addfield(n) {
  var name = (n != "" ? n+"_" : "");
  var field;
  var desc;
  var errors;
  var success;
  var entries;
  var count;
  
  var insert_num = 1;
  
  var i = 1;
  var x = 0;
  var div;
  var copy = "";
  
  with (this) {
    field = $(name+'item_1');
    errors = $(name+'item_errors_1');
    success = $(name+'item_success_1');
    entries = $(name+'item_entries');
    count = $(name+'item_count');
    
    if (field && entries && errors && count) {
      if ($(name+'item_insert')) {
        insert_num = $(name+'item_insert').options[$(name+'item_insert').selectedIndex].value;
      }
      
      for (z = 0; z < insert_num; z++) {
        i = 1;
        x = 0;
        
        while (x == 0) {
          if ($(name+'item_'+i)) {
            i++;
          } else {
            x = i;
          }
        }
        
        div = document.createElement("div");
        div.id = name+"item_"+x;
        
        copy = field.innerHTML.replace("/"+name+"item_errors_1/gi",name+"item_errors_"+x);
        copy = copy.replace("/"+name+"item_success_1/gi",name+"item_success_"+x);
        copy = copy.replace("/"+name+"item_input_1/gi",name+"item_input_"+x);
        copy = copy.replace("/"+name+"item_type_1/gi",name+"item_type_"+x);
        copy = copy.replace("/"+name+"item_value_1/gi",name+"item_value_"+x);
        copy = copy.replace(/#1/gi,"#"+x);
        
        div.innerHTML = copy;
        entries.insertBefore(div,null);
        
        if ($(name+'item_errors_'+x)) {
          $(name+'item_errors_'+x).style.visibility = "hidden";
          $(name+'item_errors_'+x).style.display = "none";
        }
        
        count.innerHTML = x;
      }
    }
  }
}

function site_utility_inventory_brandsbycompany(load,id,b) {
  // id - selected entry from companies
  // b - list of brand entries (based on company selection)
  
  var brands;
  
  with (this) {
    brands = $('inventory_brand_list');
    
    if (load == 1) {
      $('data_loader').src = "http://www.gmf.ca/faculty/inventory/x/brands_by_company.php?id="+id.replace(/company-/gi,'');
    } else {
      if (brands) {
        if (brands.options.length > 0) {
          total = brands.options.length;
          for (i = total; i > -1; i--) {
            brands.remove(i);
          }
        }
        
        if (b.length > 0) {
          new_entry = document.createElement('OPTION');
          new_entry.text = "Select..";
          new_entry.value = "";
          new_entry.label = "";
          
          brands.options.add(new_entry);
          
          for (i = 0; i < b.length; i++) {
            new_entry = document.createElement('OPTION');
            new_entry.text = b[i][0];
            new_entry.value = b[i][0];
            new_entry.label = b[i][1];
            
            brands.options.add(new_entry);
          }
        } else {
          if ($('brand')) {
            $('brand').value = "";
          }
        }
      }
    }
  }
}

function site_utility_round(v,p) {
  var r = "";
  
  if (v != "") {
    if (Site.Number(v) == 1) {
      r = (v*1).toFixed(p);
    }
  }
  
  return r;
}

function site_utility_tax(p,t) {
  var r = "";
  
  with (this) {
    p = Round(p,2);
    t = Round(t,2);
    
    if (p != "" && t != "") {
      r = (p * (t/100)).toFixed(2);
    }
  }
  
  return r;
}

function site_utility_pricerange(low,high) {
  var nums = new Array(0,0);
  
  with (this) {
    if (low.value && high.value) {
      nums[0] = Round(low.value,2);
      nums[1] = Round(high.value,2);
      
      nums[0] = (nums[0] == "" ? 0 : (nums[0]*1));
      nums[1] = (nums[1] == "" ? 0 : (nums[1]*1));
      
      if (nums[0] > nums[1]) {
        nums[0] = nums[1];
      }
      
      low.value = Round(nums[0],2);
      high.value = Round(nums[1],2);
    }
  }
}

Site_Utility.prototype.Initialize = site_utility_initialize;
Site_Utility.prototype.Inventory_SelectCompany = site_utility_inventory_selectcompany;
Site_Utility.prototype.Categories = site_utility_categories;
Site_Utility.prototype.AddField = site_utility_addfield;
Site_Utility.prototype.Inventory_BrandsByCompany = site_utility_inventory_brandsbycompany;
Site_Utility.prototype.Round = site_utility_round;
Site_Utility.prototype.Tax = site_utility_tax;
Site_Utility.prototype.PriceRange = site_utility_pricerange;

var Utility = new Site_Utility();
    Utility.Initialize();