var isInternetExplorer = (navigator.appName.indexOf("Microsoft") != -1);

/*
future references:
var keycode = isInternetExplorer ? event.keyCode : event.which;
*/

function countSpaces(obj){
	var iLength = obj.value.length;
	var strSpaces = obj.value.match(new RegExp("( )", "g"));
	var countSpaces = strSpaces ? strSpaces.length : 0;
	return countSpaces;
}

function countLineBreaks(obj){
	var iLength = obj.value.length;
	var strLineBreaks = obj.value.match(new RegExp("(\\n)", "g"));
	var countLineBreaks = strLineBreaks ? strLineBreaks.length : 0;
	return countLineBreaks;
}

function textCounter(field, counter_field, maxlimit) {
	var lineBreaks = countLineBreaks(field);
	var adjust = isInternetExplorer ? 1 : 0;
	if (field.value.length - lineBreaks * adjust > maxlimit){
		field.value = field.value.substring(0, maxlimit + lineBreaks * adjust);
		field.focus();
	} else {
		counter_field.value = maxlimit - field.value.length + lineBreaks * adjust;
	}
}

function backToSection(backToURL, forceBackToURL){
	if(forceBackToURL == null) forceBackToURL = false;
	if(history.length > 1 && !forceBackToURL) history.back(); else window.location.href = backToURL;
}

function hideStatus(){
	window.defaultStatus='';
	window.status='';
	return true;
}

function searchReset() {
	tot = document.search_form.elements.length;
	for(i=0;i<tot;i++) {
		if (document.search_form.elements[i].type == 'text') {
			document.search_form.elements[i].value = "";
		} else if (document.search_form.elements[i].type == 'checkbox' || document.search_form.elements[i].type == 'radio') {
			document.search_form.elements[i].checked = false;
		} else if (document.search_form.elements[i].type == 'select-one') {
			document.search_form.elements[i].selectedIndex = 0;
		}
	}
	if ((document.search_form.country_id) || (document.search_form.state_id) || (document.search_form.region_id) || (document.search_form.city_id) || (document.search_form.area_id)) {
		searchLocationReset();
	}
}

function easyFriendlyUrl(name2friendlyurl, target, validchars, separator) {
	var str = "";
	var i;
	var exp_reg = new RegExp("[" + validchars + separator + "]");
	var exp_reg_space = new RegExp("[ ]");
	name2friendlyurl.toString();
	for (i=0 ; i<name2friendlyurl.length; i++) {
		if (exp_reg.test(name2friendlyurl.charAt(i))) {
			str = str+name2friendlyurl.charAt(i);
		} else {
			if (exp_reg_space.test(name2friendlyurl.charAt(i))) {
				if (str.charAt(str.length-1) != separator) {
					str = str + separator;
				}
			}
		}
	}
	if (str.charAt(str.length-1) == separator) str = str.substr(0, str.length-1);
	document.getElementById(target).value = str.toLowerCase();
}

function searchLocationReset() {
	if (document.search_form.country_id) {
		if (document.search_form.state_id) {
			while (document.search_form.state_id.options.length>1) {
				deleteIndex=document.search_form.state_id.options.length-1;
				document.search_form.state_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.region_id) {
			while (document.search_form.region_id.options.length>1) {
				deleteIndex=document.search_form.region_id.options.length-1;
				document.search_form.region_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.city_id) {
			while (document.search_form.city_id.options.length>1) {
				deleteIndex=document.search_form.city_id.options.length-1;
				document.search_form.city_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.area_id) {
			while (document.search_form.area_id.options.length>1) {
				deleteIndex=document.search_form.area_id.options.length-1;
				document.search_form.area_id.options[deleteIndex]=null;
			}
		}
	} else if (document.search_form.state_id) {
		if (document.search_form.region_id) {
			while (document.search_form.region_id.options.length>1) {
				deleteIndex=document.search_form.region_id.options.length-1;
				document.search_form.region_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.city_id) {
			while (document.search_form.city_id.options.length>1) {
				deleteIndex=document.search_form.city_id.options.length-1;
				document.search_form.city_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.area_id) {
			while (document.search_form.area_id.options.length>1) {
				deleteIndex=document.search_form.area_id.options.length-1;
				document.search_form.area_id.options[deleteIndex]=null;
			}
		}
	} else if (document.search_form.region_id) {
		if (document.search_form.city_id) {
			while (document.search_form.city_id.options.length>1) {
				deleteIndex=document.search_form.city_id.options.length-1;
				document.search_form.city_id.options[deleteIndex]=null;
			}
		}
		if (document.search_form.area_id) {
			while (document.search_form.area_id.options.length>1) {
				deleteIndex=document.search_form.area_id.options.length-1;
				document.search_form.area_id.options[deleteIndex]=null;
			}
		}
	} else if (document.search_form.city_id) {
		if (document.search_form.area_id) {
			while (document.search_form.area_id.options.length>1) {
				deleteIndex=document.search_form.area_id.options.length-1;
				document.search_form.area_id.options[deleteIndex]=null;
			}
		}
	}
}

/***
 *
 * Pure javascript functions to work with class manipulation (add/remove/has and get class)
 *
 ***/

if(!document.getElementsByClassName) {
	document.getElementsByClassName = function (searchClass,node,tag) {
  		var classElements = new Array();
  		if (node == null)
    		node = document;
  		if (tag == null)
    		tag = '*';
  		var els = node.getElementsByTagName(tag);
  		var elsLen = els.length;
  		var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
  		for (i = 0, j = 0; i < elsLen; i++) {
    		if (pattern.test(els[i].className) ) {
      			classElements[j] = els[i];
      			j++;
    		}
  		}
  		return classElements;
	}
}
// ----------------------------------------------------------------------------
// HasClassName
//
// Description : returns boolean indicating whether the object has the class name
//    built with the understanding that there may be multiple classes
//
// Arguments:
//    objElement              - element to manipulate
//    strClass                - class name to add
//
function HasClassName(objElement, strClass)
   {

   // if there is a class
   if ( objElement.className )
      {

      // the classes are just a space separated list, so first get the list
      var arrList = objElement.className.split(' ');

      // get uppercase class for comparison purposes
      var strClassUpper = strClass.toUpperCase();

      // find all instances and remove them
      for ( var i = 0; i < arrList.length; i++ )
         {

         // if class found
         if ( arrList[i].toUpperCase() == strClassUpper )
            {

            // we found it
            return true;

            }

         }

      }

   // if we got here then the class name is not there
   return false;

   }
// 
// HasClassName
// ----------------------------------------------------------------------------


// ----------------------------------------------------------------------------
// AddClassName
//
// Description : adds a class to the class attribute of a DOM element
//    built with the understanding that there may be multiple classes
//
// Arguments:
//    objElement              - element to manipulate
//    strClass                - class name to add
//
function AddClassName(objElement, strClass, blnMayAlreadyExist)
   {

   // if there is a class
   if ( objElement.className )
      {

      // the classes are just a space separated list, so first get the list
      var arrList = objElement.className.split(' ');

      // if the new class name may already exist in list
      if ( blnMayAlreadyExist )
         {

         // get uppercase class for comparison purposes
         var strClassUpper = strClass.toUpperCase();

         // find all instances and remove them
         for ( var i = 0; i < arrList.length; i++ )
            {

            // if class found
            if ( arrList[i].toUpperCase() == strClassUpper )
               {

               // remove array item
               arrList.splice(i, 1);

               // decrement loop counter as we have adjusted the array's contents
               i--;

               }

            }

         }

      // add the new class to end of list
      arrList[arrList.length] = strClass;

      // add the new class to beginning of list
      //arrList.splice(0, 0, strClass);
      
      // assign modified class name attribute
      objElement.className = arrList.join(' ');

      }
   // if there was no class
   else
      {

      // assign modified class name attribute      
      objElement.className = strClass;
   
      }

   }
// 
// AddClassName
// ----------------------------------------------------------------------------


// ----------------------------------------------------------------------------
// RemoveClassName
//
// Description : removes a class from the class attribute of a DOM element
//    built with the understanding that there may be multiple classes
//
// Arguments:
//    objElement              - element to manipulate
//    strClass                - class name to remove
//
function RemoveClassName(objElement, strClass)
   {

   // if there is a class
   if ( objElement.className )
      {

      // the classes are just a space separated list, so first get the list
      var arrList = objElement.className.split(' ');

      // get uppercase class for comparison purposes
      var strClassUpper = strClass.toUpperCase();

      // find all instances and remove them
      for ( var i = 0; i < arrList.length; i++ )
         {

         // if class found
         if ( arrList[i].toUpperCase() == strClassUpper )
            {

            // remove array item
            arrList.splice(i, 1);

            // decrement loop counter as we have adjusted the array's contents
            i--;

            }

         }

      // assign modified class name attribute
      objElement.className = arrList.join(' ');

      }
   // if there was no class
   // there is nothing to remove

   }
// 
// RemoveClassName
// ----------------------------------------------------------------------------