/*
  -------------------------------------------------------------------------
		                JavaScript Form Validator
                                Version 3.0
                    Part of the JavaScript Coder software
					
	Copyright 2003 JavaScript-coder.com. All rights reserved.
    This javascript code is installed as part of JavaScript Coder software.
	You may adapt this script for your Web pages, provided these opening credit
    lines (down to the lower dividing line) are kept intact.
    You may not reprint or redistribute this code without permission from 
    JavaScript-Coder.com.
	
	JavaScript Coder
	It precisely codes what you imagine!
	Grab your copy here:
		http://www.javascript-coder.com/
    -------------------------------------------------------------------------  
*/
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.length && isNaN(itemobj.selectedIndex) )
    //for radio button; don't do for 'select' item
	{
		itemobj = itemobj[0];
	}	
	if(!itemobj)
	{
		alert("BUG: Couldnot get the input object named: "+itemname);
		return;
	}
	
	if(!itemobj.validationset)
	{
		itemobj.validationset = new ValidationSet(itemobj);
	}
	itemobj.validationset.add(descriptor,errstr);
}
function ValidationDesc(inputitem,desc,error)
{
    this.desc=desc;
	this.error=error;
	this.itemobj = inputitem;
	this.validate=vdesc_validate;
}
function vdesc_validate()
{
 if(!validateInput(this.desc,this.itemobj,this.error))
 {
    this.itemobj.focus();
		return false;
 }
 return true;
}
function ValidationSet(inputitem)
{
    this.vSet=new Array();
	this.add= add_validationdesc;
	this.validate= vset_validate;
	this.itemobj = inputitem;
}
function add_validationdesc(desc,error)
{
  this.vSet[this.vSet.length]= 
  new ValidationDesc(this.itemobj,desc,error);
}
function vset_validate()
{
   for(var itr=0;itr<this.vSet.length;itr++)
	 {
	   if(!this.vSet[itr].validate())
		 {
		   return false;
		 }
	 }
	 return true;
}
/*  checks the validity of an email address entered 
*   returns true or false 
*/ 
function validateEmail(email)
{
    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 TestComparison(objValue,strCompareElement,strvalidator,strError)
{
   var bRet=true;
   var objCompare=null;
   if(!objValue.form)
   {
      alert("BUG: No Form object!");
	  return false
   }
   objCompare = objValue.form.elements[strCompareElement];
   if(!objCompare)
   {
     alert("BUG: Element with name"+strCompareElement+" not found !");
     return false;
   }
   if(strvalidator != "eqelmnt" &&
   	  strvalidator != "neelmnt")
   {
      if(isNaN(objValue.value)) 
      { 
        alert(objValue.name+": Deve essere un numero "); 
        return false; 
      }//if 
      if(isNaN(objCompare.value)) 
      { 
        alert(objCompare.name+": Deve essere un numero "); 
        return false; 
      }//if 	  
   }//if
   var cmpstr="";
   switch(strvalidator)
   {
       case "eqelmnt": 
			{
			   if(objValue.value != objCompare.value)
			   {
 	 		      cmpstr = " deve essere uguale a ";
			      bRet = false;
			   }//if
			   break;
			}//case
		case "ltelmnt":
			{
			if(eval(objValue.value) >= eval(objCompare.value)) 
				{
			       cmpstr =  " deve essere pił piccolo di "; 
			       bRet = false;					
				}
			  break;
			}//case
		case "leelmnt":
			{
				if(eval(objValue.value) >  eval(objCompare.value)) 
				{
			       cmpstr =  " deve essere pił piccolo o uguale a"; 
			       bRet = false;					
				}
			  break;
			}//case		
		case "gtelmnt":
			{
				if(eval(objValue.value) <=  eval(objCompare.value)) 
				{
			       cmpstr =  " deve essere maggiore di"; 
			       bRet = false;					
				}
			  break;
			}//case
		case "geelmnt":
			{
				if(eval(objValue.value) < eval(objCompare.value)) 
				{
			       cmpstr =  " should be greater than or equal to"; 
			       bRet = false;					
				}
			  break;
			}//case
		case "neelmnt":
			{
			   if(objValue.value.length > 0 &&
			     objCompare.value.length > 0 &&
			     objValue.value == objCompare.value)
			   {
 	 		      cmpstr = " deve essere differente di  ";
			      bRet = false;
			   }//if
			   break;			
			}			
   }//switch
   if(bRet==false)
   {
      if(!strError || strError.length==0)
	  {
	    strError = objValue.name + cmpstr + objCompare.value; 
	  }//if
	  alert(strError);
   }//if
   return bRet;
}
function TestSelMin(objValue,strMinSel,strError)
{
    var bret = true;
	var objcheck = objValue.form.elements[objValue.name];
	var chkcount =0;
	if(objcheck.length)
	{
		for(var c=0;c < objcheck.length;c++)
		{
		   if(objcheck[c].checked == "1")
		   {
		     chkcount++;
		   }//if
		}//for
	}
	else
	{
	  chkcount = (objcheck.checked == "1")?1:0;
	}
	var minsel = eval(strMinSel);
	if(chkcount < minsel)
	{
		if(!strError || strError.length ==0) 
		{ 
			strError = "Prego selezionare almeno "+minsel+" check boxes per "+objValue.name;  
		}//if                                                               
		alert(strError); 
		bret = false;
	}
	return bret;
}

function TestDontSelectChk(objValue,chkValue,strError)
{
    var pass=true;
	var objcheck = objValue.form.elements[objValue.name];
    if(objcheck.length)
	{
		var idxchk=-1;
		for(var c=0;c < objcheck.length;c++)
		{
		   if(objcheck[c].value == chkValue)
		   {
		     idxchk=c;
			 break;
		   }//if
		}//for
		if(idxchk>= 0)
		{
		  if(objcheck[idxchk].checked=="1")
		  {
		    pass=false;
		  }
		}//if
	}
	else
	{
		if(objValue.checked == "1")
		{
			pass=false;
		}//if
	}//else
	if(pass==false)
	{
     if(!strError || strError.length ==0) 
        { 
        	strError = "Non posso procedere fino a quando non hai selezionato "+objValue.name;  
        }//if			  
	  alert(strError);
	  
	}
    return pass;
}

function TestRequiredInput(objValue,strError)
{
 var ret = true;
    if(eval(objValue.value.length) == 0) 
    { 
       if(!strError || strError.length ==0) 
       { 
         strError = objValue.name + " : Campo obbligatorio !"; 
       }//if 
       alert(strError); 
       ret=false; 
    }//if 
return ret;
}

function TestMaxLen(objValue,strMaxLen,strError)
{
 var ret = true;
    if(eval(objValue.value.length) > eval(strMaxLen)) 
    { 
      if(!strError || strError.length ==0) 
      { 
        strError = objValue.name + " : "+ strMaxLen +" minimo di caratteri "; 
      }//if 
      alert(strError + "\n[Lunghezza attuale = " + objValue.value.length + " ]"); 
      ret = false; 
    }//if 
return ret;
}

function TestMinLen(objValue,strMinLen,strError)
{
 var ret = true;
    if(eval(objValue.value.length) <  eval(strMinLen)) 
    { 
      if(!strError || strError.length ==0) 
      { 
        strError = objValue.name + " : " + strMinLen + " characters minimum  "; 
      }//if               
      alert(strError + "\n[Lunghezza attuale = " + objValue.value.length + " ]"); 
      ret = false;   
    }//if 
return ret;
}

function TestInputType(objValue,strRegExp,strError,strDefaultError)
{
   var ret = true;

    var charpos = objValue.value.search(strRegExp); 
    if(objValue.value.length > 0 &&  charpos >= 0) 
    { 
     if(!strError || strError.length ==0) 
      { 
        strError = strDefaultError;
      }//if 
      alert(strError + "\n [Posizione del carattere errata " + eval(charpos+1)+"]"); 
      ret = false; 
    }//if 
 return ret;
}

function TestEmail(objValue,strError)
{
var ret = true;
     if(objValue.value.length > 0 && !validateEmail(objValue.value)	 ) 
     { 
       if(!strError || strError.length ==0) 
       { 
          strError = objValue.name+": Prego inserire un indirizzo email valido "; 
       }//if                                               
       alert(strError); 
       ret = false; 
     }//if 
return ret;
}

function TestLessThan(objValue,strLessThan,strError)
{
var ret = true;
	  if(isNaN(objValue.value)) 
	  { 
	    alert(objValue.name+": Deve essere un numero "); 
	    ret = false; 
	  }//if 
	  else
	  if(eval(objValue.value) >=  eval(strLessThan)) 
	  { 
	    if(!strError || strError.length ==0) 
	    { 
	      strError = objValue.name + " : il valore dovrebbe essere inferiore a "+ strLessThan; 
	    }//if               
	    alert(strError); 
	    ret = false;                 
	   }//if   
return ret;          
}

function TestGreaterThan(objValue,strGreaterThan,strError)
{
var ret = true;
     if(isNaN(objValue.value)) 
     { 
       alert(objValue.name+": Deve essere un numero "); 
       ret = false; 
     }//if 
	 else
     if(eval(objValue.value) <=  eval(strGreaterThan)) 
      { 
        if(!strError || strError.length ==0) 
        { 
          strError = objValue.name + " : Il valore deve essere superiore a "+ strGreaterThan; 
        }//if               
        alert(strError);  
        ret = false;
      }//if  
return ret;           
}

function TestRegExp(objValue,strRegExp,strError)
{
var ret = true;
    if( objValue.value.length > 0 && 
        !objValue.value.match(strRegExp) ) 
    { 
      if(!strError || strError.length ==0) 
      { 
        strError = objValue.name+": Ci sono caratteri invalidi "; 
      }//if                                                               
      alert(strError); 
      ret = false;                   
    }//if 
return ret;
}
function TestDontSelect(objValue,index,strError)
{
var ret = true;
     if(objValue.selectedIndex == null) 
     { 
       alert("BUG: dontselect command for non-select Item"); 
       ret = false; 
     } 
	 else
     if(objValue.selectedIndex == eval(index)) 
     { 
      if(!strError || strError.length ==0) 
       { 
       strError = objValue.name+": Prego selezionare un opzione "; 
       }//if                                                               
       alert(strError); 
       ret =  false;                                   
      } 
return ret;
}

function TestSelectOneRadio(objValue,strError)
{
	var objradio = objValue.form.elements[objValue.name];
	var one_selected=false;
	for(var r=0;r < objradio.length;r++)
	{
	  if(objradio[r].checked == "1")
	  {
	  	one_selected=true;
		break;
	  }
	}
	if(false == one_selected)
	{
      if(!strError || strError.length ==0) 
       {
	    strError = "Prego selezionare un opzione per "+objValue.name;
	   }	
	  alert(strError);
	}
return one_selected;
}

//*  Checks each field in a form 
function validateInput(strValidateStr,objValue,strError) 
{ 
    var ret = true;
    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": 
         { 
		   ret = TestRequiredInput(objValue,strError)
           break;             
         }
        case "maxlength": 
        case "maxlen": 
          { 
			 ret = TestMaxLen(objValue,cmdvalue,strError)
             break; 
          }
        case "minlength": 
        case "minlen": 
           { 
			 ret = TestMinLen(objValue,cmdvalue,strError)
             break; 
           }
        case "alnum": 
        case "alphanumeric": 
           { 
				ret = TestInputType(objValue,"[^A-Za-z0-9]",strError, 
						objValue.name+": Sono ammessi soltanto caratteri alfanumerici ");
				break; 
           }
        case "alnum_s": 
        case "alphanumeric_space": 
           { 
				ret = TestInputType(objValue,"[^A-Za-z0-9\\s]",strError, 
						objValue.name+": Sono ammessi soltanto caratteri alfanumerici e spazi vuoti ");
				break; 
           }		   
        case "num": 
        case "numeric": 
           { 
                ret = TestInputType(objValue,"[^0-9]",strError, 
						objValue.name+": Soltanto cifre ammesse ");
                break;               
           }
        case "alphabetic": 
        case "alpha": 
           { 
                ret = TestInputType(objValue,"[^A-Za-z]",strError, 
						objValue.name+": Soltanto caratteri alfabetici ammessi ");
                break; 
           }
        case "alphabetic_space": 
        case "alpha_s": 
           { 
                ret = TestInputType(objValue,"[^A-Za-z\\s]",strError, 
						objValue.name+": Soltanto caratteri alfabetici e spazi vuoti ammessi ");
                break; 
           }
        case "email": 
          { 
			   ret = TestEmail(objValue,strError);
               break; 
          }
        case "lt": 
        case "lessthan": 
         { 
    	      ret = TestLessThan(objValue,cmdvalue,strError);
              break; 
         }
        case "gt": 
        case "greaterthan": 
         { 
			ret = TestGreaterThan(objValue,cmdvalue,strError);
            break; 
         }
        case "regexp": 
         { 
			ret = TestRegExp(objValue,cmdvalue,strError);
           break; 
         }
        case "dontselect": 
         { 
			 ret = TestDontSelect(objValue,cmdvalue,strError)
             break; 
         }
		case "dontselectchk":
		{
			ret = TestDontSelectChk(objValue,cmdvalue,strError)
			break;
		}
		case "selmin":
		{
			ret = TestSelMin(objValue,cmdvalue,strError);
			break;
		}
		case "selone":
		{
			ret = TestSelectOneRadio(objValue,strError);
		    break;
		}		 
		//Comparisons
		case "eqelmnt": 
		case "ltelmnt":
		case "leelmnt":
		case "gtelmnt":
		case "geelmnt":
		case "neelmnt":
		{
		    return TestComparison(objValue,cmdvalue,command,strError);
    		break;
		}
    }//switch 
    return ret; 
}
/*
	Copyright 2003 JavaScript-coder.com. All rights reserved.
*/