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 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) 
{ 
    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": 
         { 
		   objv = TrimString(objValue.value);
           if(eval(objv.length) == 0) 
           { 
              if(!strError || strError.length ==0) 
              { 
                //strError = objValue.name + " : Required Field"; 
				strError = "Required Field"; 
              }//if 
              alert(strError); 
              return false; 
           }//if 
		   objValue.value = objv;
           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 = "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 = "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 "; 
				  strError = "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 = "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 "numhyphen":
			{
              var charpos = objValue.value.search("[^0-9\-_]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  strError = "Characters allowed are 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 = "The email address " + objValue.value + " is not valid. Please enter a valid email address. Example: johnsmith@yahoo.com"; 
                 }//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 = "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 = "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 = "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 = "Please Select one option "; 
              }//if                                                               
              alert(strError); 
              return false;                                   
             } 
             break; 
         }//case dontselect 
		
		case "alphaspace":
		{
			  var charpos = objValue.value.search("[0-9]");
			  if(objValue.value.length > 0 &&  charpos >= 0) 
			  { 
				strError = "Please enter your friends valid name"; 
				alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
				return false;  
			  }
			  var charpos = objValue.value.search("[-_.]");
			  if(objValue.value.length > 0 &&  charpos >= 0) 
			  { 
				strError = "Please enter your friends valid name"; 
				alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
				return false;  
			  }
		}//case alphaspace
		
		case "equalemail":
		{
			  var e1 = document.frm_user_add.txt_email_address.value;
			  var e2 =  document.frm_user_add.txt_ccemail_address.value;
			  if(e1 != e2)
			  {
				alert(strError); 
				return false;  
			  }
			  break; 
		}//case equal
		
		case "equalpassword":
		{
			  var e1 = document.frm_user_add.txt_password.value;
			  var e2 =  document.frm_user_add.txt_ccpassword.value;
			  if(e1 != e2)
			  {
				alert(strError); 
				return false;  
			  }
			  break; 
		}//case equal
		case "empty":
		{
			var strtext = objValue.value;
			while (strText.substring(0,1) == ' ') 
				strText = strText.substring(1, strText.length); 
				
			while (strText.substring(strText.length-1,strText.length) == ' ') 
				strText = strText.substring(0, strText.length-1); 
	
			alert(strText); 
		}
		
		case "radiooptions":
		{
			
			 var frm = document.forms["frm_add_event"];
			 if (frm.single_date.checked == false && frm.date_range.checked == false && frm.day_of_week.checked == false)	
			{
				alert('Please select the Date');
				return false;
			} else {
				return true;
			}


		}
		case "Terms":
		{
			 var frm = document.forms["frm_user_add"];
			 if (frm.service.checked == false)	
			 {
				alert('Please agree with the Terms of Service and Privacy Policy.');
				return false;
			 } 
			 else 
			 {
				return true;
			 }
		}

    }//switch 
    return true; 
}
function ValidateThreeOptions()
{
	var frm = document.forms["frm_add_event"];
	if (frm.single_date.checked == false && frm.date_range.checked == false && frm.day_of_week.checked == false)	
	{
		alert('Please select the Date');
		return false;
	} else {
	
	return true;
   
   }

}

function ValidateDescription()
{
	var Temptext = document.frm_user_add.txt_about_description.value
	if (Temptext.length < 100)
	{
		alert('About Description should be 100 Character Atleast.'); 
		return false;
	}
}	

function ValidateDate() 
{ 
	var date1 = document.getElementByName('from').value;
	var date2 = document.getElementByName('to').value;
	year1 = date1.getYear();
	year2 = date2.getYear();
	month1 = date1.getMonth();
	month2 = date2.getMonth();
	day1 = date1.getDay();
	day2 = date2.getDay();
	
	if (year2 < year1)
		alert('Invaild Date');
	else
	{
		if (month2 < month1)		
			alert('Invaild Date');
		else
		{
			if (day2 < day1)	
				alert('Invaild Date');
			else
			{
				return true;
			}		
		}
	}	
}

function TrimString(sInString) 
{
  sInString = sInString.replace( /^\s+/g, "" );// strip leading
  return sInString.replace( /\s+$/g, "" );// strip trailing
}


/*
	Copyright 2003 JavaScript-coder.com. All rights reserved.
*/