//----------------------------------------RESOLVER------------------------------------------
function Resolver(fieldname,reg,message)
{
   this.field=document.all[fieldname];
   this.field.regexp=reg;
   this.field.msg=message;
   this.field.onkeypress=resolve;
}
//==============================
function resolve()
{
   		var keyValue = String.fromCharCode(event.keyCode);
   if(!keyValue.match(this.regexp)) { alert(this.msg); return false;}
   else return true;
}

 //-------------------------------VALIDATOR-----------------------------------------
function Validator(frmname)
{
  this.formobj=document.forms[frmname];
	if(!this.formobj)
	{
	  alert("BUG: couldnot get Form object "+frmname);
		return;
	}
	if(this.formobj.onsubmit)
	{
	 this.formobj.old_onsubmit = this.formobj.onsubmit;
	 this.formobj.onsubmit=null;
	}
	else
	{
	 this.formobj.old_onsubmit = null;
	}
	this.formobj.onsubmit=form_submit_handler;
	this.addValidation = add_validation;
	this.setAddnlValidationFunction=set_addnl_vfunction;
	this.clearAllValidations = clear_all_validations;
         
}

//------------------------------------------------------------------------
function set_addnl_vfunction(functionname)
{
  this.formobj.addnlvalidation = functionname;
}

//------------------------------------------------------------------------
function clear_all_validations()
{
	for(var itr=0;itr < this.formobj.elements.length;itr++)
	{
		this.formobj.elements[itr].validationset = null;
	}
}

//------------------------------------------------------------------------
function form_submit_handler()
{
	for(var itr=0;itr < this.elements.length;itr++)
	{
		if(this.elements[itr].validationset &&
	   !this.elements[itr].validationset.validate())
		{
		  return false;
		}
	}
	if(this.addnlvalidation)
	{
	  str =" var ret = "+this.addnlvalidation+"()";
	  eval(str);
    if(!ret) return ret;
	}
	return true;
}

//------------------------------------------------------------------------
function add_validation(itemname,descriptor,errstr)
{
  if(!this.formobj)
	{
	  alert("BUG: the form object is not set properly");
		return;
	}//if
	var itemobj = this.formobj[itemname];
  if(!itemobj)
	{
	  alert("BUG: Couldnot get the input object named: "+itemname);
		return;
	}
	if(!itemobj.validationset)
	{
	  itemobj.validationset = new ValidationSet(itemobj,this.formobj);
	}
  itemobj.validationset.add(descriptor,errstr);
}

//-------------------------------VALIDATION DESC-----------------------------------------
function ValidationDesc(inputitem,desc,error,formObj)
{
  this.desc=desc;
	this.error=error;
	this.itemobj = inputitem;
	this.validate=vdesc_validate;
	this.formobj=formObj;
}

//------------------------------------------------------------------------
function vdesc_validate()
{
 if(!V2validateData(this.desc,this.itemobj,this.error,this.formobj))
 {
    this.itemobj.focus();
		return false;
 }
 return true;
}

//---------------------------------VALIDATION SET---------------------------------------
function ValidationSet(inputitem,formObj)
{
    this.vSet=new Array();
	this.add= add_validationdesc;
	this.validate= vset_validate;
	this.itemobj = inputitem;
	this.formobj=formObj;
}

//------------------------------------------------------------------------
function add_validationdesc(desc,error)
{
  this.vSet[this.vSet.length]= 
	  new ValidationDesc(this.itemobj,desc,error,this.formobj);
}

//------------------------------------------------------------------------
function vset_validate()
{
   for(var itr=0;itr<this.vSet.length;itr++)
	 {
	   if(!this.vSet[itr].validate())
		 {
		   return false;
		 }
	 }
	 return true;
}

//------------------------------------------------------------------------
function validateEmailv2(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    if(email.length <= 0)
	{
	  return true;
	}
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
      var regexp_user=/^\"?[\w-_\.]*\"?$/;
      if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
      var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
      if(splitted[2].match(regexp_domain) == null) 
      {
	    var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
	    if(splitted[2].match(regexp_ip) == null) return false;
      }// if
      return true;
    }
return false;
}

//------------------------------------------------------------------------
function V2validateData(strValidateStr,objValue,strError,formObj) 
{ 
    var epos = strValidateStr.search("="); 
    var  command  = ""; 
    var  cmdvalue = ""; 
    if(epos >= 0) 
    { 
     command  = strValidateStr.substring(0,epos); 
     cmdvalue = strValidateStr.substr(epos+1); 
    } 
    else 
    { 
     command = strValidateStr; 
    } 
    switch(command) 
    { 
        case "req": 
        case "required": 
         { 
           if(eval(objValue.value.length) == 0) 
           { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : Required Field"; 
              }//if 
              alert(strError); 
              return false; 
           }//if 
           break;             
         }//case required 
        case "maxlength": 
        case "maxlen": 
          { 
             if(eval(objValue.value.length) >  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : "+cmdvalue+" characters maximum "; 
               }//if 
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false; 
             }//if 
             break; 
          }//case maxlen 
        case "minlength": 
        case "minlen": 
           { 
             if(eval(objValue.value.length) <  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : " + cmdvalue + " characters minimum  "; 
               }//if               
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false;                 
             }//if 
             break; 
            }//case minlen 
        case "alnum": 
        case "alphanumeric": 
           { 
              var charpos = objValue.value.search("[^A-Za-z0-9_-]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumeric 
        case "num": 
        case "numeric": 
           { 
              var charpos = objValue.value.search("[^0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only digits allowed "; 
                }//if               
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break;               
           }//numeric 
        case "alphabetic": 
        case "alpha": 
           { 
              var charpos = objValue.value.search("[^A-Za-z]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": Only alphabetic characters allowed "; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//alpha 
//---------------------------------------------
        case "cbox": 
           { 
	   var flag=false; // а стоит? пока нет!
	   var message; // строка стандартной ошибки
   	   if(cmdvalue.indexOf("checkall")!=-1) // проверка на выделенность всех
             {
             var groupname=objValue.name.split("[")[0];
              for (i=0; i<formObj.elements.length; i++)
              if( (formObj.elements[i].name.indexOf(groupname)!=-1) && (formObj.elements[i].checked))
                 flag=true;
              message=formObj.name+": More than one radio will be checked";
             } 
             else  if(cmdvalue.indexOf("check")!=-1) // проверка на выделенность одного конкретного
	   {
  	      flag = ( objValue.checked ? true : false ) ;
                message=objValue.name+": Will be checked";
             }
             if(!flag)
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = message; 
                }//if                             
                alert(strError); 
                return false; 
              }//if 
              break; 
           }//cbox
//---------------------
       case "htmlentity":
	{
	   var backup="";
	   if(cmdvalue.length>0) // если есть параметры
            {
               var splitted = cmdvalue.split(":");
	     var str ="objValue.value = objValue.value.replace(/"+splitted[0]+"/g,\""+splitted[1]+"\")";
	     eval(str);
               backup = objValue.value.search(splitted[0]);
               // если backup =-1 надо написать что искомый символ не найден..
            }     
	   else
            {
             // сама замена
             objValue.value=objValue.value.replace(/\'/g,"&#39;") . replace(/\"/g,"&quot;") . replace(/</g,"&lt;") . replace(/>/g,"&gt;");
	    // проверка на осуствление замены
              backup = objValue.value.search("[\'\"<>]");
              }

              if(objValue.value.length > 0 &&  backup >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": converting operation is invalid"; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(backup+1)+"]"); 
                return false; 
              }//if 
	break;
	}
//---------------------------------------------
       case "alnumhyphen":
	{
              var charpos = objValue.value.search("[^A-Za-z0-9\-_]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = objValue.name+": characters allowed are A-Z,a-z,0-9,- and _"; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 			
	break;
	}
        case "email": 
          { 
               if(!validateEmailv2(objValue.value)) 
               { 
                 if(!strError || strError.length ==0) 
                 { 
                    strError = objValue.name+": Enter a valid Email address "; 
                 }//if                                               
                 alert(strError); 
                 return false; 
               }//if 
           break; 
          }//case email 
        case "lt": 
        case "lessthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              alert(objValue.name+": Should be a number "); 
              return false; 
            }//if 
            if(eval(objValue.value) >=  eval(cmdvalue)) 
            { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : value should be less than "+ cmdvalue; 
              }//if               
              alert(strError); 
              return false;                 
             }//if             
            break; 
         }//case lessthan 
        case "gt": 
        case "greaterthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              alert(objValue.name+": Should be a number "); 
              return false; 
            }//if 
             if(eval(objValue.value) <=  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : value should be greater than "+ cmdvalue; 
               }//if               
               alert(strError); 
               return false;                 
             }//if             
            break; 
         }//case greaterthan 
        case "regexp": 
         { 
	 	if(objValue.value.length > 0)
			{
	            //if(!objValue.value.match(cmdvalue))
	            if(objValue.value.match(cmdvalue)) 
	            { 
	              if(!strError || strError.length ==0) 
	              { 
	                strError = objValue.name+": Invalid characters found "; 
	              }//if                                                               
	              alert(strError); 
	              return false;                   
	            }//if 
			}
           break; 
         }//case regexp 

        case "password": 
         { 
		 if(objValue.value.length > 0)
		 {
		    cmdvalue=document.all[cmdvalue].value;
	            if(! ((objValue.value.indexOf(cmdvalue)!=-1)  && (objValue.value.length==cmdvalue.length)) )
	            { 
	              if(!strError || strError.length ==0) 
	              { 
	                strError = objValue.name+": Password and confirm password not identifity"; 
	              }//if                                                               
	              alert(strError); 
	              return false;                   
	            }//if 
			}
           break; 
         }//case regexp 


        case "dontselect": 
         { 
            if(objValue.selectedIndex == null) 
            { 
              alert("BUG: dontselect command for non-select Item"); 
              return false; 
            } 
            if(objValue.selectedIndex == eval(cmdvalue)) 
            { 
             if(!strError || strError.length ==0) 
              { 
              strError = objValue.name+": Please Select one option "; 
              }//if                                                               
              alert(strError); 
              return false;                                   
             } 
             break; 
         }//case dontselect 
    }//switch 
    return true; 
}

//*******************************************confirm remove items checkboxes !!!!!!!!----------------------------

   function remove_checks(obj,str,msg){
    for(var i=0; i< obj.elements.length; i++)
     if(obj.elements[i].name.indexOf(str)!=-1) 
      if(obj.elements[i].checked)
       if(confirm(msg))
        return true;
       else return false;
    return true;
   }