var DOM = document.getElementById; // IE 5+ && NS 6+
var IE4 = document.all; // IE 4
//var NS4 = document.layers; // NS 4
var NS6 = DOM && !IE4; // NS 6+


function highlight() {
    if (DOM){
        // DISABLED

    var tmp1e = document.getElementsByName('id')[0].value == "" 
	var tmp1f = document.getElementsByName('id')[0].value == document.getElementsByName('id')[0].defaultValue
	var tmp1g = document.getElementsByName('id')[0].defaultValue == "" 
    var tmp1 = tmp1e;
	
    var tmp2e = document.getElementsByName('cis_us_form')[0].value == "" 
//	 && document.getElementsByName('ctvrt_form')[0].value == "";
	var tmp2f = document.getElementsByName('cis_us_form')[0].value == document.getElementsByName('cis_us_form')[0].defaultValue
//     && document.getElementsByName('ctvrt_form')[0].value == document.getElementsByName('ctvrt_form')[0].defaultValue;
	var tmp2g = document.getElementsByName('cis_us_form')[0].defaultValue == ""
// 	 && document.getElementsByName('ctvrt_form')[0].defaultValue == "";
	var tmp2 = tmp2e || tmp2f;
	
    var tmp3e = document.getElementsByName('id')[0].value == "" 
	var tmp3f = document.getElementsByName('id')[0].value == document.getElementsByName('id')[0].defaultValue
	var tmp3g = document.getElementsByName('id')[0].defaultValue == "" 
    var tmp3 = tmp3e;


      document.getElementsByName('id')[0].disabled = !tmp2;
      document.getElementsByName('cis_us_form')[0].disabled = !tmp1;
//      document.getElementsByName('ctvrt_form')[0].disabled = !tmp1;

        // BACKGROUND
        var silver = 'silver';
        document.getElementsByName('id')[0].style.backgroundColor = tmp2 ? '' : silver;
        document.getElementsByName('cis_us_form')[0].style.backgroundColor = tmp1 ? '' : silver;
//        document.getElementsByName('ctvrt_form')[0].style.backgroundColor = tmp1 ? '' : silver;
		
        // COLOR
        document.getElementById('cis_us_formL').style.color = tmp1 ? '' : silver;
        document.getElementById('ctvrt_formL').style.color = tmp1 ? '' : silver;
//        document.getElementById('idL').style.color = tmp2 ? '' : silver;

        // SUBMIT
    tmp1e = document.getElementsByName('id')[0].value == "";
	tmp1f = document.getElementsByName('id')[0].value == document.getElementsByName('id')[0].defaultValue;
	tmp1g = document.getElementsByName('id')[0].defaultValue == "";
			

    } else if (IE4) {
        //alert('Neni podpora :)');
    }
}

function changeimg(el, s, d) {
    s = eval(s);
    if (!el.disabled) 
        el.src = el.src.replace(s, d);
}