function validate_form1 ( )

{

    valid = true;



if ( ( document.order_form1.color[0].checked == false )

    && ( document.order_form1.color[1].checked == false ) )

    {

        alert ( "Please choose a color" );

        valid = false;

    }



return valid;



}





function validate_form2 ( )

{

    valid = true;



if ( ( document.order_form2.color[0].checked == false )

    && ( document.order_form2.color[1].checked == false ) )

    {

        alert ( "Please choose a color" );

        valid = false;

    }



return valid;



}



function validate_form3 ( )

{

    valid = true;



if ( ( document.order_form3.color[0].checked == false )

    && ( document.order_form3.color[1].checked == false ) )

    {

        alert ( "Please choose a color" );

        valid = false;

    }



return valid;



}





function validate_form4 ( )

{

    valid = true;



if ( ( document.order_form4.color[0].checked == false )

    && ( document.order_form4.color[1].checked == false ) )

    {

        alert ( "Please choose a color" );

        valid = false;

    }



return valid;



}