/*
  -------------------------------------------------------------------------
	                    JavaScript Form Validator 
                                Version 2.0.2
	Copyright 2003 JavaScript-coder.com. All rights reserved.
	You use this script in your Web pages, provided these opening credit
    lines are kept intact.
	The Form validation script is distributed free from JavaScript-Coder.com

	You may please add a link to JavaScript-Coder.com, 
	making it easy for others to find this script.
	Checkout the Give a link and Get a link page:
	http://www.javascript-coder.com/links/how-to-link.php

    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)
	{
	  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(!V2validateData(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;
}

function validateEmail(emailStr) {
       if (emailStr.length == 0) {
           return true;
       }
       var emailPat=/^(.+)@(.+)$/;
       var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
       var validChars="\[^\\s" + specialChars + "\]";
       var quotedUser="(\"[^\"]*\")";
       var ipDomainPat=/^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
       var atom=validChars + '+';
       var word="(" + atom + "|" + quotedUser + ")";
       var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
       var domainPat=new RegExp("^" + atom + "(\\." + atom + ")*$");
       var matchArray=emailStr.match(emailPat);
       if (matchArray == null) {
           return false;
       }
       var user=matchArray[1];
       var domain=matchArray[2];
       if (user.match(userPat) == null) {
           return false;
       }
       var IPArray = domain.match(ipDomainPat);
       if (IPArray != null) {
           for (var i = 1; i <= 4; i++) {
              if (IPArray[i] > 255) {
                 return false;
              }
           }
           return true;
       }
       var domainArray=domain.match(domainPat);
       if (domainArray == null) {
           return false;
       }
       var atomPat=new RegExp(atom,"g");
       var domArr=domain.match(atomPat);
       var len=domArr.length;
       if ((domArr[domArr.length-1].length < 2) ||
           (domArr[domArr.length-1].length > 3)) {
           return false;
       }
       if (len < 2) {
           return false;
       }
       return true;
}

/* Function to validate date */
function validateDate(txtDate,fieldName) 
{
      var txtValueDate=txtDate.value;
      if (!txtValueDate)  
        return true;

        var in_date = stripCharString(txtValueDate," ");
        in_date = in_date.toUpperCase();
        //alert(in_date);
        var date_is_bad = 0;  

        if (!allowInString(in_date,"/0123456789-"))
        {	
			alert(fieldName+": Please enter date in 'dd/mm/yyyy' format.");
			return false;
        }
        if (!date_is_bad)
        {
            	var date_pieces = new Array();
            	date_pieces = in_date.split("/");

		if (date_pieces.length == 2 && isNaN(parseInt(date_pieces[1]))==false)
		{ 
			var d = new Date();
                 	in_date = in_date + "/" + get_full_year(d);
                 	date_pieces = in_date.split("/");
            	}
		else if (date_pieces.length !=3)
		{
			alert(fieldName+": enter date in 'dd/mm/yyyy' format.");
			return false;
		}
	
		var dd = parseInt(date_pieces[0],10);
		var mm = parseInt(date_pieces[1],10);
		var yy = parseInt(date_pieces[2]);
	
		if (dd < 1 || dd > 31)
		{ 
			alert(fieldName+": Invalid day, please re-enter.");
			return false;
		}
	
		if (dd < 10)
		{
			dd = "0" + dd;
			//alert(dd);
		}

		if (mm < 1 || mm > 12)
		{
			alert(fieldName+": Invalid month, please re-enter.");
			return false;
		}
		if (mm < 10)
		{
			mm = "0" + mm;
			//alert(mm);
		}
		if (mm == 4 || mm == 6 || mm == 9 || mm == 11)
		{
			if (dd == 31)
			{
				alert(fieldName+": There is no 31st in this month, please re-enter.");
				return false; 
			}
		}
		if (mm == 2)
		{
			if (dd > 29)
			{
				alert(fieldName+": Invalid day, please re-enter.");
				return false; 
			}
			else if (dd == 29 & (yy/4) != parseInt(yy/4))
			{
				alert(fieldName+": There is no Feb 29 in this year.");
				return false; 
			}
		}

		if ( isNaN(parseInt(date_pieces[2]))==true)
		{
	    		alert(fieldName+": Please enter date in 'dd/mm/yyyy' format.");
         		return false;	
		}
		else
		{
	        	if (date_pieces[2].length != 2 && date_pieces[2].length != 4)
	         	{
                		alert(fieldName+": Invalid year, please re-enter.");
				return false;
                	}
        	    	else if (date_pieces[2].length == 2)
	        	{
				if (yy > 69  && yy < 100)
				{
					yy =  yy + 1900;
				}
	        		if (yy <= 69)
				{
		 			yy = yy + 2000;
				}
        	    	}
		}
        }		
   
        return_date = dd + "/" + mm + "/" + yy;
        txtDate.value = return_date;        
        return true;
}  
function get_full_year(d)
{
	var y = ""
		
	if (d.getFullYear() != null)
	{
		y = d.getFullYear();
	
		if (y < 1970)
		{
			 y+= 100;		
		}
		else
		{	
	        y = d.getYear();
	        if (y > 69  && y < 100)
			{
				 y += 1900;
			}
	        if (y < 1000)
			{
				 y += 2000;
			}
		}
	}
    return y;
}

/* The following functions were written by Gordon McComb
 More information can be found here: http://www.javaworld.com/javaworld/jw-02-1997/jw-02-javascript.html)*/
function stripCharString (InString, CharString)
{
        var OutString="";
		
		for (var Count=0; Count < InString.length; Count++)
		{
        	var TempChar=InString.substring (Count, Count+1);
		    var Strip = false;
		    
			for (var Countx = 0; Countx < CharString.length; Countx++)
			{
		        var StripThis = CharString.substring(Countx, Countx+1)
        		
				if (TempChar == StripThis)
				{
                	Strip = true;
		            break;
        		}
      		}
      		if (!Strip)
			{
        		OutString=OutString+TempChar;
			}
   		}
        return (OutString);
}

function allowInString (InString, RefString)
{
        if(InString.length==0)
		{
			return (false);
		}
		
        for (var Count=0; Count < InString.length; Count++)
		{
        	var TempChar= InString.substring (Count, Count+1);
      		
			if (RefString.indexOf (TempChar, 0)==-1)
			{  
        		return (false);
			}
   		}
   		return (true);
}

function V2validateData(strValidateStr,objValue,strError) 
{ 
    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 "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(!validateEmail(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(!strError || strError.length ==0) 
	              { 
	                strError = objValue.name+": Invalid characters found "; 
	              }//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 
        case "date": 
          { 
               if(!validateDate(objValue,strError)) 
               { 
                 return false; 
               }//if 
               break; 
          }//case date
    }//switch 
    return true; 
}
/*
	Copyright 2003 JavaScript-coder.com. All rights reserved.
*/