function checkDealerKeywordsb()
    {				    
	    if(document.carsDealerSearch.uiTxtYourPostcode.value=="" || document.carsDealerSearch.uiTxtYourPostcode.value=="e.g RH17 9QU" || document.carsDealerSearch.uiTxtYourPostcode.value.length<=4)
	    {
		    alert("Please enter your full postcode");
		    return false;
		  }
	    OnSubmitFormb();
	    return;
    }

    function OnSubmitFormb()
    {
		if (document.carsDealerSearch.dd[1].checked== true)  
	    {	
		    document.carsDealerSearch.miles.value='200';
		    document.carsDealerSearch.action ="http://carsupermarkets.autotrader.co.uk/CarSupermarkets/nearest/index.html?postcode=" + document.carsDealerSearch.uiTxtYourPostcode.value;
		    document.carsDealerSearch.carSupermarket.value='true';                        
	    } 
	    else 
	    {
		    document.carsDealerSearch.miles.value='20';
		    document.carsDealerSearch.action ="http://dealerdirectory.autotrader.co.uk/cars_search.do?";
		    document.carsDealerSearch.carSupermarket.value='';                        
    	}


    	return true;
    }