ciao ragazzi!!ho un problema con il sovrapporre tre div..in pratica io ho queste tre div:

Codice PHP:
<div>

<
DIV id="marker_div" style="position:absolute;display:block; left:250px; top:0px; width:350px; height:450px; z-index:400;background-color:white"  align="left" valign="top">
<
h2>Option Chart</h2>
<
div style="width: 150px; float: left;">
                        
                        

<
input type="checkbox" id="Lines_Check" checked="checked" class="styled" /> Lines</p>
                        
                        

<
input type="checkbox" id="Areas_Check" checked="checked" class="styled" /> Areas</p>
                        
                        

<
input type="checkbox" id="Markers_Check" checked="checked" class="styled" /> Markers</p>
                        
                        <
label>Shadow :</label>

                            <
label>&nbsp&nbsp&nbsp&nbsp Offset right:&nbsp</label><input style="width:40px" type="text" id="Shadow_dx" tabindex="1" value="" title="offset to the right"

                            <
label>&nbsp&nbsp&nbsp&nbsp Offset down:&nbsp</label><input style="width:40px" type="text" id="Shadow_dy" tabindex="1" value="" title="the offset down">

                            <
label>&nbsp&nbsp&nbsp&nbsp Width: &nbsp</label><input style="width:40px" type="text" id="Shadow_dw" tabindex="1" value="" title="the width of the shadow line">

                             

                        
                        <
label>Gap</label>    
                             <
input style="width:80px" type="text" id="Gap" name="Gap" tabindex="1" value="" title="spacing between your bars or columns">

                             

                        
                        <
label>Color Area</label>
                            <
select id="Area_Color"
                               <
option value="grey">Grey</option>
                               <
option value="black">Black</option>
                               <
option value="blue">Blue</option>
                               <
option value="cyan">Cyan</option>
                               <
option value="green">Green</option>
                               <
option value="orange">Orange</option>
                               <
option value="purple">Purple</option>        
                               <
option value="red">Red</option>
                             </
select>
                            
                             <
label>Color Lines</label>
                            <
select id="Lines_Color"
                               <
option value="grey">Grey</option>
                               <
option value="black">Black</option>
                               <
option value="blue">Blue</option>
                               <
option value="cyan">Cyan</option>
                               <
option value="green">Green</option>
                               <
option value="orange">Orange</option>
                               <
option value="purple">Purple</option>        
                               <
option value="red">Red</option>
                             </
select>

                            
    <
input type="button" value="Click here" onClick="ShowAndHide('sensor_tab');"/>

</
div>
</
div>

<
DIV id="bar_div" style="position:absolute;display:none; left:250px; top:0px; width:350px; height:450px; z-index:100;background-color:white"  align="left" valign="top">
<
div style="width: 150px; float: left;">
                        
                        <
label>Shadow :</label>

                            <
label>&nbsp&nbsp&nbsp&nbsp Offset right:&nbsp</label><input style="width:40px" type="text" id="Shadow_dx" tabindex="1" value="" title="offset to the right"

                            <
label>&nbsp&nbsp&nbsp&nbsp Offset down:&nbsp</label><input style="width:40px" type="text" id="Shadow_dy" tabindex="1" value="" title="the offset down">

                            <
label>&nbsp&nbsp&nbsp&nbsp Width: &nbsp</label><input style="width:40px" type="text" id="Shadow_dw" tabindex="1" value="" title="the width of the shadow line">

                             

                        
                        <
label>Gap</label>    
                             <
input style="width:80px" type="text" id="Gap" name="Gap" tabindex="1" value="" title="spacing between your bars or columns">

                             

                        
                        <
label>Color Area</label>
                            <
select id="Area_Color"
                               <
option value="grey">Grey</option>
                               <
option value="black">Black</option>
                               <
option value="blue">Blue</option>
                               <
option value="cyan">Cyan</option>
                               <
option value="green">Green</option>
                               <
option value="orange">Orange</option>
                               <
option value="purple">Purple</option>        
                               <
option value="red">Red</option>
                             </
select>
                            
                             <
label>Color Lines</label>
                            <
select id="Lines_Color"
                               <
option value="grey">Grey</option>
                               <
option value="black">Black</option>
                               <
option value="blue">Blue</option>
                               <
option value="cyan">Cyan</option>
                               <
option value="green">Green</option>
                               <
option value="orange">Orange</option>
                               <
option value="purple">Purple</option>        
                               <
option value="red">Red</option>
                             </
select>

                            
    <
input type="button" value="Click here" onClick="ShowAndHide('sensor_tab');"/>

</
div>
</
div>

<
DIV id="torta_div" style="position:absolute;display:none; left:250px; top:0px; width:350px; height:450px; z-index:0;background-color:white"  align="left" valign="top">
<
div style="width: 150px; float: left;">
                            
    <
input type="button" value="Click here" onClick="ShowAndHide('sensor_tab');"/>
</
div>
</
div>
</
div

ho creato una funzione cosi definita:

Codice PHP:
function Change_div(div1,div2,div3){
    
alert('sono nella change');
    
el_show=document.getElementById(div1);
    
el2=document.getElementById(div2);
    
el3=document.getElementById(div3);
    
    
el_show.style.display="block";
    
el2.style.display="none";
    
el3.style.dispaly="none";    

questa funzione viene chiamata atraverso dei radio button
Codice PHP:

<DIV id="chart_div" style="position:absolute; left:700px; top:5px; width:400px; height:800px; z-index:0"  align="left" valign="top">
<
h2>Choice Graph</h2>

<
div id="Markschart" style="  width: 250px; height: 150px;"></div>

  

<
input type="radio" name="Radio_Chart" value="Marks_Chart" onClick="Change_div('marker_div','torta_div','bar_div');"checked="checked"/> Markers Chart</p>
  
 



<
div id="Barschart" style="  width: 250px; height: 150px;"></div>

 

<
input type="radio" name="Radio_Chart" value="Bar_Chart" onClick="Change_div('bar_div','marker_div','torta_div');" /> Bar Chart</p>





<
div id="Columnschart" style="  width: 250px; height: 150px;"></div>

  

<
input type="radio" name="Radio_Chart"  value="Columns_Chart" onClick="Change_div('bar_div','marker_div','torta_div');"/> Columns Chart</p>
  




<
div id="Piechart" style="  width: 250px; height: 150px;"></div>

 

<
input type="radio" name="Radio_Chart"  value="Pie_Chart" onClick="Change_div('torta_div','marker_div','bar_div');"/> Pie Chart</p>



        
</
DIV
ora la funzione funziona bene tranne per l ultimo che nn funziona e nn capisco perche....