Getting multiple values from a select input element

       
function doShow()
{
var users=document.forms["myForm"].elements["users"];        
var selectedUsers=getSelections(users);        

for(i=0;i < selectedUsers.length;i++)
{        
    alert(selectedUsers[i].value);    
}        
}    

// returns selected options elements only
function getSelections(select) 
{   
var options = select.options,sOptions = [],opt, k=0;       

while(opt = options[k++])
{    
    if(opt.selected)    
    {       
    sOptions[sOptions.length] = opt;     
    }  
}  
return sOptions 
}         

And in the Html body within a form tag:

select name="users" multiple="multiple" size="5"

with some options

and then a submit button with a call to the function in the onclick event:

input type="submit" name="submit" value="submit" onClick="javascript:doShow();"