Faire disparaitre et apparaitre une div

<input onclick="cache('aCacher')" type="submit" value="cacher"/> 
<div id="aCacher">qsdqsdqsd</div>    

<script>
var bool=true;
function cache(id){
	if(bool==true){
		document.getElementById(id).style.display='none';
		bool=false;
	}else{
		document.getElementById(id).style.display='block';
		bool=true;
	}
}
</script>

<a id="but+" onclick="cache('aCacher','<?php echo $public_products_more_infos ?>')">x</a>

<script>
var bool=true;
function cache(id,txt){
	if(bool==true){
		document.getElementById(id).style.display='block';
		document.getElementById('but+').innerHTML = txt+"(-)";
		bool=false;
	}else{
		document.getElementById(id).style.display='none';
		document.getElementById('but+').innerHTML = txt+"(+)";
		bool=true;
	}
}
</script>

function cacheTable(btn) {
 
var tbl = document.getElementById("monTable");
 
if(tbl.style.display != 'none') {
tbl.style.display = 'none';
btn.value="Afficher tableau";
} else {
tbl.style.display = 'block';
btn.value="Cacher tableau";
}
 
}

<input type="button" ... onclick="cacheTable(this)" ... />

<input id="but+" onclick="cache('aCacher')" type="submit" value="+">
<div style="display:none;" id="aCacher">qsdqsdqsd</div>

<script>
var bool=true;
function cache(id){
	if(bool==true){
		document.getElementById(id).style.display='block';
		document.getElementById('but+').value="-";
		bool=false;
	}else{
		document.getElementById(id).style.display='none';
		document.getElementById('but+').value="+";
		bool=true;
	}
}
</script>

<a id="but+" onclick="cache('aCacher')">+</a>
<div style="display:none;" id="aCacher">qsdqsdqsd</div>
<script>
var bool=true;
function cache(id){
	if(bool==true){
		document.getElementById(id).style.display='block';
		document.getElementById('but+').innerHTML = "-";
		bool=false;
	}else{
		document.getElementById(id).style.display='none';
		document.getElementById('but+').innerHTML = "+";
		bool=true;
	}
}
</script>
 

<A href="" onclick="cache('hide')">(</A> 
<A id="but+" onclick="cache('hide')">+</A> 
<A href="" onclick="cache('hide')">)</A> <A class="lienbleu" id="but+">

<A href="" onclick="cache('hide')">(</A> 

 <script>
..........
		document.getElementById('but+').innerHTML = "-";
..........
</script>
 

<A href="" onclick="cache('hide')">)</A> <A class="lienbleu" id="but+"> 

<A onclick="cache('hide')">(+) More infos</A> 

 <script>
...............
		document.getElementById('but+').innerHTML = "(-) More infos";
		..............
		document.getElementById('but+').innerHTML = "(+) More infos";
..........
</script>
 

$public_products_more_infos = "More infos";

$public_products_more_infos = "Thêm infos";

// FONCTION QUI VA AFFICHER/CACHER UN TABLEAU SUR LES FICHES PRODUITS 
var bool=true; 
function cache(id){ 
 if(bool==true){ 
  document.getElementById(id).style.display='block'; 
  document.getElementById('but+').innerHTML = "(-)"; 
  bool=false; 
 }else{ 
  document.getElementById(id).style.display='none'; 
  document.getElementById('but+').innerHTML = "(+)"; 
  bool=true; 
 } 
} 
//-->

<?php 
// On affiche un liens vers les extras si il y a des extras. 
if(!empty($products_extra_text)) 
  { 
 echo '<A href="#more" class="lienbleu" id="but+" onclick=cache("hide")>(+)</A>'; 
    echo '<A href="#more" class="lienbleu" id="but+" onclick=cache("hide")>'.$public_products_more_infos.'</A>'; 
  } 
?>