function CheckForm(form) {
 var navrat = true;
 	
    if (form.jmeno.value == '') {
        form.jmeno.style.background = '#FFE4E0';
        form.jmeno.style.borderColor = '#BF5234';
        navrat = false;
    } else {
        form.jmeno.style.background = '#fff';
        form.jmeno.style.borderColor = '#888';
    }
    
	if (form.obsah.value == '') {
        form.obsah.style.background = '#FFE4E0';
        form.obsah.style.borderColor = '#BF5234';
        navrat = false;
    } else {
        form.obsah.style.background = '#fff';
        form.obsah.style.borderColor = '#888';
    }
    
    return navrat;
 }
 
 
 function CheckFormMail(form) {
 var navrat = true;
 	
    if (form.jmeno.value == '') {
        form.jmeno.style.background = '#FFE4E0';
        form.jmeno.style.borderColor = '#BF5234';
        navrat = false;
    } else {
        form.jmeno.style.background = '#fff';
        form.jmeno.style.borderColor = '#888';
    }
    
    if (form.mail.value == '' || form.mail.value == '@') {
        form.mail.style.background = '#FFE4E0';
        form.mail.style.borderColor = '#BF5234';
        navrat = false;
    } else {
        form.mail.style.background = '#fff';
        form.mail.style.borderColor = '#888';
    }
    
	if (form.obsah.value == '') {
        form.obsah.style.background = '#FFE4E0';
        form.obsah.style.borderColor = '#BF5234';
        navrat = false;
    } else {
        form.obsah.style.background = '#fff';
        form.obsah.style.borderColor = '#888';
    }
    
    return navrat;
 }
 

 function changet(w, porad) {
	if (w == 1) document.getElementById('tit_item' + porad).className = 'tit_item_hov';
	else document.getElementById('tit_item' + porad).className = 'tit_item';
 }

 function change(w, porad) {
	if (w == 1) document.getElementById('rbox' + porad).className = 'rbox_hov';
	else document.getElementById('rbox' + porad).className = 'rbox';
 }

 function Menu(ide){
  if (ide == 'm1') {
   if (document.getElementById('m2').style.display == 'block') {
     document.getElementById('m2').style.display = 'none';
     document.getElementById('sez2').style.display = 'none';
     document.getElementById('m1').style.display = 'block';
     document.getElementById('sez1').style.display = 'block';
     document.getElementById('men').innerHTML=("<li id='now'><a onfocus='blur();' onclick='Menu(\"m1\")'>File hostingy</a></li><li><a onfocus='blur();' onclick='Menu(\"m2\")'>Torrenty</a></li>");
   }
  } else if (ide == 'm2') {
   if (document.getElementById('m1').style.display == 'block') {
     document.getElementById('m1').style.display = 'none';
     document.getElementById('sez1').style.display = 'none';
     document.getElementById('m2').style.display = 'block';
     document.getElementById('sez2').style.display = 'block';
     document.getElementById('men').innerHTML=("<li><a onfocus='blur();' onclick='Menu(\"m1\")'>File hostingy</a></li><li id='now'><a onfocus='blur();' onclick='Menu(\"m2\")'>Torrenty</a></li>");
   }
  }
 }

 function VisNon(ide){
  st = document.getElementById(ide).style;
  if (st.display == 'none') {
  	document.getElementById('img'+ide).innerHTML=("<img width='8' height='8' src='http://www.seinfeld.cz/img/arr_d.png' alt='&darr;' />"); 
  	st.display = 'block';
  } else {
  	document.getElementById('img'+ide).innerHTML=("<img width='8' height='8' src='http://www.seinfeld.cz/img/arr_r.png' alt='&rarr;' />"); 
	st.display = 'none';
  }
 }
 
 function DisplayBox(ide){
  st = document.getElementById(ide).style;
  if (st.display == 'none') {
  	document.getElementById('img'+ide).innerHTML=("<img width='12' height='12' src='../img/icon/arr_l.png' alt='&larr;' />"); 
  	st.display = 'block';
  } else {
  	document.getElementById('img'+ide).innerHTML=("<img width='12' height='12' src='../img/icon/arr_d.png' alt='&darr;' />"); 
	st.display = 'none';
  }
 }
 
 function ShowForm(ide){
  st = document.getElementById(ide).style;
  if (st.display == 'none') {
  	document.getElementById('img'+ide).innerHTML=("Zavřít formulář"); 
  	st.display = 'block';
  } else {
  	document.getElementById('img'+ide).innerHTML=("Nový příspěvek"); 
	st.display = 'none';
  }
 }

 function VisNonS(ide){
  st = document.getElementById(ide).style;
  if (st.display == 'none') {
  	document.getElementById('i'+ide).innerHTML=("<img src='http://www.scrubs.web4u.cz/img/bg_serieh.png' alt='&darr;' />");
  	st.display = 'block';
  } else {
  	document.getElementById('i'+ide).innerHTML=("<img src='http://www.scrubs.web4u.cz/img/bg_serie.png' alt='&rarr;' />");
	st.display = 'none';
  }
 }
 
  function WrapIE(lft, rgt) {
    strSelection = document.selection.createRange().text;
    if (strSelection!="") {
      document.selection.createRange().text = lft + strSelection + rgt;
    }
  }

  function wrapMoz(txtarea, lft, rgt) {
    var selLength = txtarea.textLength;
    var selStart = txtarea.selectionStart;
    var selEnd = txtarea.selectionEnd;
    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 + lft + s2 + rgt + s3;
  }
  
  function wrapTag(txtarea, lft, rgt) {
    lft = unescape(lft);
    rgt = unescape(rgt);
    if (document.all) {
      WrapIE(lft, rgt);
    }
    else if (document.getElementById) {
      wrapMoz(txtarea, lft, rgt);
    }
  }  
  
  function insertIE (txtarea, text) {
    if (txtarea.createTextRange && txtarea.caretPos) { 
      var caretPos = txtarea.caretPos; 
      caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text+caretPos.text + ' ' : text+caretPos.text;
    } else {
      txtarea.value = txtarea.value + text; 
    }
    return;
  } 

  function insertMoz(txtarea , lft) {
    var rgt="";
    wrapTag(txtarea, lft, rgt);
    return;
  }

  function insertTag(txtarea , lft) {
    if (document.all) {
      insertIE(txtarea, lft);
    }
    else if (document.getElementById) {
      insertMoz(txtarea, lft);
    }
  }

function form(what)
{
	insertTag (document.kniha.obsah,what);
}