function my_check(field)
{
    var what        =  field.form;
    var uncheck_all = (field.value=="-1")?true:false;
    var fval;

    for (var i=0; i<what.elements.length; i++)
    {
        if ( what.elements[i].name.indexOf(field.name) > -1 )
        {
            fval = what.elements[i].value;
            if ( uncheck_all && (fval!="-1")) what.elements[i].checked = false;
            if (!uncheck_all && (fval=="-1")) what.elements[i].checked = false;
        }
    }
    if (what.elements.na1.checked == false || what.elements.na2.checked == false || what.elements.na3.checked == false || what.elements.na4.checked == false || what.elements.na5.checked == false)
    {
    	 what.elements.na6.checked = true;
    }
    if (what.elements.na1.checked == true | what.elements.na2.checked == true | what.elements.na3.checked == true | what.elements.na4.checked == true | what.elements.na5.checked == true)
    {
    	what.elements.na6.checked = false;
    }
    
    if (what.elements.ag1.checked == false || what.elements.ag2.checked == false || what.elements.ag3.checked == false || what.elements.ag4.checked == false || what.elements.ag5.checked == false)
    {
    	 what.elements.ag6.checked = true;
    }
    if (what.elements.ag1.checked == true | what.elements.ag2.checked == true | what.elements.ag3.checked == true | what.elements.ag4.checked == true | what.elements.ag5.checked == true)
    {
    	what.elements.ag6.checked = false;
    }
    
    if (what.elements.he1.checked == false || what.elements.he2.checked == false || what.elements.he3.checked == false || what.elements.he4.checked == false)
    {
    	 what.elements.he5.checked = true;
    }
    if (what.elements.he1.checked == true | what.elements.he2.checked == true | what.elements.he3.checked == true | what.elements.he4.checked == true)
    {
    	what.elements.he5.checked = false;
    }
    
    if (what.elements.wo1.checked == false || what.elements.wo2.checked == false || what.elements.wo3.checked == false || what.elements.wo4.checked == false || what.elements.wo5.checked == false || what.elements.wo6.checked == false || what.elements.wo7.checked == false)
    {
    	 what.elements.wo8.checked = true;
    }
    if (what.elements.wo1.checked == true | what.elements.wo2.checked == true | what.elements.wo3.checked == true | what.elements.wo4.checked == true | what.elements.wo5.checked == true | what.elements.wo6.checked == true | what.elements.wo7.checked == true)
    {
    	what.elements.wo8.checked = false;
    }
    
    if (what.elements.la1.checked == false || what.elements.la2.checked == false || what.elements.la3.checked == false)
    {
    	 what.elements.la4.checked = true;
    }
    if (what.elements.la1.checked == true | what.elements.la2.checked == true | what.elements.la3.checked == true)
    {
    	what.elements.la4.checked = false;
    }
    
    if (what.elements.re1.checked == false || what.elements.re2.checked == false || what.elements.re3.checked == false || what.elements.re4.checked == false || what.elements.re5.checked == false || what.elements.re6.checked == false || what.elements.re7.checked == false || what.elements.re8.checked == false)
    {
    	 what.elements.re9.checked = true;
    }
    if (what.elements.re1.checked == true | what.elements.re2.checked == true | what.elements.re3.checked == true | what.elements.re4.checked == true | what.elements.re5.checked == true | what.elements.re6.checked == true | what.elements.re7.checked == true | what.elements.re8.checked == true)
    {
    	what.elements.re9.checked = false;
    }
    
    if (what.elements.ma1.checked == false || what.elements.ma2.checked == false || what.elements.ma3.checked == false || what.elements.ma4.checked == false || what.elements.ma5.checked == false)
    {
    	 what.elements.ma6.checked = true;
    }
    if (what.elements.ma1.checked == true | what.elements.ma2.checked == true | what.elements.ma3.checked == true | what.elements.ma4.checked == true | what.elements.ma5.checked == true)
    {
    	what.elements.ma6.checked = false;
    }
    
    if (what.elements.ed1.checked == false || what.elements.ed2.checked == false || what.elements.ed3.checked == false || what.elements.ed4.checked == false)
    {
    	 what.elements.ed5.checked = true;
    }
    if (what.elements.ed1.checked == true | what.elements.ed2.checked == true | what.elements.ed3.checked == true | what.elements.ed4.checked == true)
    {
    	what.elements.ed5.checked = false;
    }

    if (what.elements.app1.checked == false || what.elements.app2.checked == false || what.elements.app3.checked == false || what.elements.app4.checked == false || what.elements.app5.checked == false)
    {
    	 what.elements.app6.checked = true;
    }
    if (what.elements.app1.checked == true | what.elements.app2.checked == true | what.elements.app3.checked == true | what.elements.app4.checked == true | what.elements.app5.checked == true)
    {
    	 what.elements.app6.checked = false;
    }
}