function empt() {
		
	if (document.getElementById('search_string')) {
		var s_str  = document.getElementById('search_string');
		var s_but  = document.getElementById('search_but');
		
		s_str.focus();
		if (s_str.value.length > 2) {
			s_but.disabled=false;
		} else {
			s_but.disabled=true;
		}
	}
	if (document.getElementById('fdbk_comment')) {
		var s_str  = document.getElementById('fdbk_comment');
		var s_but  = document.getElementById('subm');
		
		s_str.focus();
		if (s_str.value.length > 2) {
			s_but.disabled=false;
		} else {
			s_but.disabled=true;
		}
	}
}

function emptbut() {
        setTimeout("emptbut2()",200);
}
function emptbut2() {
        if (document.getElementById('subm')) {
                var s_butt  = document.getElementById('subm');
                s_butt.disabled=true;
        }
}

function showhide(id1, id2) {
	if (id1 != '') showhide_v(id1);
	if (id2 != '') showhide_v(id2);
}

function showhide_v(id) {
	if (document.getElementById(id).style.display == 'none') {
		document.getElementById(id).style.display = 'block';
		document.getElementById('td_'+id).className = 'table_title1';
        //document.getElementById('pic_'+id).src = 'pics/ico_collapse_wh.gif';		
	} else {
		document.getElementById(id).style.display = 'none';
		document.getElementById('td_'+id).className = 'table_title';
        //document.getElementById('pic_'+id).src = 'pics/ico_expand_wh.gif';
	}
	cols_h();
}

function showhide2(id1, id2) {
	if (id1 != '') showhide2_v(id1);
	if (id2 != '') showhide2_v(id2);
}

function showhide2_v(id) {
	if (document.getElementById(id).style.display == 'none') {
		document.getElementById(id).style.display = 'block';
		document.getElementById('td_'+id).className = 'table_title1';
        document.getElementById('pic_'+id).src = 'pics/optionminus.html';		
	} else {
		document.getElementById(id).style.display = 'none';
		document.getElementById('td_'+id).className = 'table_title';
        document.getElementById('pic_'+id).src = 'pics/optionplus.html';
	}
	cols_h();
}