KoolListBox support multi selection
$listbox->AllowMultiSelect = true;
				
	 
	                                     
	                                    												
													
													<?php
	/*
	 * This file is ready to run as standalone example. However, please do:
	 * 1. Add tags <html><head><body> to make a complete page
	 * 2. Change relative path in $KoolControlFolder variable to correctly point to KoolControls folder 
	 */
 
	$KoolControlsFolder = "../../../../KoolControls";//Relative path to "KoolPHPSuite/KoolControls" folder
 
	require $KoolControlsFolder."/KoolListBox/koollistbox.php";
 
 
	$listbox = new KoolListBox("listbox");
	$listbox->styleFolder = "default";
 
	$listbox->AddItem(new ListBoxItem("Agentina"));
	$listbox->AddItem(new ListBoxItem("Australia"));
	$listbox->AddItem(new ListBoxItem("Brazil"));
	$listbox->AddItem(new ListBoxItem("Canada"));
	$listbox->AddItem(new ListBoxItem("Chile"));
	$listbox->AddItem(new ListBoxItem("China"));
	$listbox->AddItem(new ListBoxItem("Egypt"));
	$listbox->AddItem(new ListBoxItem("England"));
	$listbox->AddItem(new ListBoxItem("France"));
	$listbox->AddItem(new ListBoxItem("Germany"));
	$listbox->AddItem(new ListBoxItem("India"));
	$listbox->AddItem(new ListBoxItem("Indonesia"));
	$listbox->AddItem(new ListBoxItem("Kenya"));
	$listbox->AddItem(new ListBoxItem("Mexico"));
	$listbox->AddItem(new ListBoxItem("New Zealand"));
	$listbox->AddItem(new ListBoxItem("South Africa"));
	$listbox->AddItem(new ListBoxItem("USA"));
 
	$listbox->AllowMultiSelect = true;//Use Multi selection is on.	
 
	$listbox->Init();
?>
 
<form id="form1" method="post">
 
	<div>
	Select the country that have you been to?
	</div>
	<div style="padding-top:10px;padding-bottom:30px;float:left">
		<?php echo $listbox->Render();?>
	</div>
	<div style="float:left;padding-top:10px;padding-left:30px;">
		<input type="submit" value="Get Selected Items" />
		<br />
		<br />
		<?php 
			if(count($listbox->SelectedItems)>0)
			{
				echo "You have been to: ";
				for($i=0;$i<count($listbox->SelectedItems);$i++)
				{
					echo "[".$listbox->SelectedItems[$i]->Value."] ";
				}
			}
		?>		
	</div>
 
	<div style="clear:both;"></div>
 
</form>