function show_hide(co) {
	if(document.getElementById(co).style.display=="none") {
		document.getElementById(co).style.display="block";
	} else {
		document.getElementById(co).style.display="none";
	}	
}

function zobrazformular() {
	if(document.getElementById('formular1').style.display=="none") {
		document.getElementById('formular1').style.display="block";
		document.getElementById('odkazzmena').innerHTML = "<a href='javascript:void(0);' onclick=\"zobrazformular();\"><img src='img/hore.png' border='0' alt='hore' /> Skryť formulár</a>";
	} else {
		document.getElementById('formular1').style.display="none";
		document.getElementById('odkazzmena').innerHTML = "<a href='javascript:void(0);' onclick=\"zobrazformular();\"><img src='img/dole.png' border='0' alt='dole' /> Napísať správu</a>";
	}
}

function pridaj(kde,co) {
	var vsetko = document.getElementById(kde).value;
	document.getElementById(kde).value=vsetko + co;
}
function addText(formname, elname, wrap1, wrap2) {
	if (document.selection) { // for IE 
		var str = document.selection.createRange().text;
		document.forms[formname].elements[elname].focus();
		var sel = document.selection.createRange();
		sel.text = wrap1 + str + wrap2;
		return;
	} else if ((typeof document.forms[formname].elements[elname].selectionStart) != 'undefined') { // for Mozilla
		var txtarea = document.forms[formname].elements[elname];
		var selLength = txtarea.textLength;
		var selStart = txtarea.selectionStart;
		var selEnd = txtarea.selectionEnd;
		var oldScrollTop = txtarea.scrollTop;
		//if (selEnd == 1 || selEnd == 2)
		//selEnd = selLength;
		var s1 = (txtarea.value).substring(0,selStart);
		var s2 = (txtarea.value).substring(selStart, selEnd)
		var s3 = (txtarea.value).substring(selEnd, selLength);
		txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
		txtarea.selectionStart = s1.length;
		txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
		txtarea.scrollTop = oldScrollTop;
		txtarea.focus();
		return;
	} else {
		insertText(elname, wrap1 + wrap2);
	}
}

function paleta_info(farba) {
	document.getElementById('paleta_bx').style.background = farba;
	document.getElementById('paleta_txt').value = farba;
}