function valdate(id)
    {
        if(document.getElementById(id).value != "")
        {
            //alert(document.getElementById(id).value.length)
            if(document.getElementById(id).value.length >= 12)
            {
                alert('please Enter date in dd/mmm/yyyy format');
                document.getElementById(id).value = '';
                document.getElementById(id).focus();
            }
            else
            {
                myregexp = /(0[1-9]|[12][0-9]|3[01])[- /.](Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[- /.](19|20)\d\d/

                mymatch = myregexp.exec(document.getElementById(id).value)
                //alert(mymatch);
                if(mymatch==null)
                {
                    alert('please Enter date in dd/mmm/yyyy format');
                    document.getElementById(id).focus();
                    document.getElementById(id).value = '';
                }
                else
                {            
                    var temp1 = document.getElementById(id).value;
                    //alert(temp1);
                    var temp = temp1.split('/');
                    //alert('test')
                    if(temp[1] == 'Feb')
                    {
                        var Lyear = temp[2]%4
                        Lyearreg = /(0[1-9]|[12][0-9])/
                        nLyearreg = /(0[1-9]|[12][0-8])/
                        if(Lyear == 0)
                        {
                            //alert('test')
                            Lmatch = Lyearreg.exec(temp[0])
                            if(Lmatch == null)
                            {
                                alert('please Check the Date and Month');                            
                                document.getElementById(id).value = '';
                                document.getElementById(id).focus();
                            }
                        }
                        else
                        {                            
                            nLmatch = nLyearreg.exec(temp[0]);
                            if(nLmatch == null)
                            {
                                alert('please Check the Date and Month');                            
                                document.getElementById(id).value = '';
                                document.getElementById(id).focus();
                            }
                        }
                    }
                   Dmonthreg = /(Jan|Feb|Mar|May|Jul|Aug|Oct|Dec)/
                   Dmonth = Dmonthreg.exec(temp[1]);
                    //alert(Dmonth);
                    if(Dmonth == null)
                    {
                        if(temp[0] == 31)
                        {
                            alert('please Check the Date and Month');
                            document.getElementById(id).value = '';
                            document.getElementById(id).focus();                        
                        }
                    }            
                    
                    
                }
            }
        }
    }