function validatePassword ( )
{
 
    var arryPasswords = new Array("surf","beach","sea","sand","swim","dive");
//  var arryPasswords = new Array("t1","t2","t3","t4","t5","t6");
    var arryPasswordEntered = new Array();
    
    arryPasswordEntered[0]=document.getElementById('passbox1').value;
    arryPasswordEntered[1]=document.getElementById('passbox2').value;
    arryPasswordEntered[2]=document.getElementById('passbox3').value;
    arryPasswordEntered[3]=document.getElementById('passbox4').value;
       
    
    passBlank=0;
    
    for(i=1;i<=4;i++)
    {
        passValue = document.getElementById('passbox'+i).value

	if (passValue == "")
        {
            passBlank = passBlank+1;	
        }
    }
    if (passBlank > 1)
    { 	
       alert ( "Please enter 4 promotional codes." );
//       document.getElementById('passbox'+i).focus();
       valid=false;
       return    
    }   
    
// checking unique values
    for(i=0;i<arryPasswordEntered.length;i++)
    {
        checkValue = arryPasswordEntered[i];
        var temp=0;
        for(j=0;j<arryPasswordEntered.length;j++)
        {
            if(checkValue.toUpperCase() == arryPasswordEntered[j].toUpperCase())
                temp++;
        } 
        if(temp > 1)
        {
         alert("Please check your promotional codes.");
         return
        } 
    }
    
     promoCodeRight=0;
    	
    for(i=1;i<=4;i++)
    {
        checkPass = document.getElementById('passbox'+(i)).value
        PromoCode = false;
        
//        promoCodeWrong = promoCodeWrong+1;
        
        for(j=0;j<arryPasswords.length;j++)
        {
            if(arryPasswords[j].toUpperCase() == checkPass.toUpperCase())
            {
            PromoCode = true;
            promoCodeRight = promoCodeRight+1;
            }
        }                 
    }


    if (promoCodeRight < 4)	
    {
            alert("One or more promotional codes are wrong.");
            return
     }       
        
    //document.getElementById('contentForm').style.display='block';
    //window.scroll(0,720); // horizontal and vertical scroll targets
    $('#pagebody').hide();
    $('#bookDivid').show();
    
}