Botão deletar no dataTable

Você colocou o h:messages fora do body…

Coloca logo abaixo do form… epa! sua página não tem h:form?

[quote=Roselito Fávero da Silva]Você colocou o h:messages fora do body…

Coloca logo abaixo do form… epa! sua página não tem h:form?[/quote]

Você tem razão, colocando o h:form funciona a exclusão. Mas o meu datatable perde toda a formatação.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
	  xmlns:h="http://java.sun.com/jsf/html"
	  xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Teste</title>
<link rel="stylesheet" type="text/css" href="CSS/style.css" />
<script type="text/javascript" src="js/clockp.js"></script>
<script type="text/javascript" src="js/clockh.js"></script> 
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/ddaccordion.js"></script>
<script type="text/javascript">
ddaccordion.init({
	headerclass: "submenuheader", //Shared CSS class name of headers group
	contentclass: "submenu", //Shared CSS class name of contents group
	revealtype: "click", //Reveal content when user clicks or onmouseover the header? Valid value: "click", "clickgo", or "mouseover"
	mouseoverdelay: 200, //if revealtype="mouseover", set delay in milliseconds before header expands onMouseover
	collapseprev: true, //Collapse previous content (so only one open at any time)? true/false 
	defaultexpanded: [], //index of content(s) open by default [index1, index2, etc] [] denotes no content
	onemustopen: false, //Specify whether at least one header should be open always (so never all headers closed)
	animatedefault: false, //Should contents open by default be animated into view?
	persiststate: true, //persist state of opened contents within browser session?
	toggleclass: ["", ""], //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
	togglehtml: ["suffix", "<img src='images/plus.gif' class='statusicon' />", "<img src='images/minus.gif' class='statusicon' />"], //Additional HTML added to the header when it's collapsed and expanded, respectively  ["position", "html1", "html2"] (see docs)
	animatespeed: "fast", //speed of animation: integer in milliseconds (ie: 200), or keywords "fast", "normal", or "slow"
	oninit:function(headers, expandedindices){ //custom code to run when headers have initalized
		//do nothing
	},
	onopenclose:function(header, index, state, isuseractivated){ //custom code to run whenever a header is opened or closed
		//do nothing
	}
})
</script>

<script type="text/javascript" src="js/jconfirmaction.jquery.js"></script>
<script type="text/javascript">
	
	$(document).ready(function() {
		$('.ask').jConfirmAction();
	});
	
</script>

<script language="javascript" type="text/javascript" src="js/niceforms.js"></script>
<link rel="stylesheet" type="text/css" media="all" href="CSS/niceforms-default.css" />

</head>
  
<body>
<div id="main_container">

	<div class="header">
    <div class="logo"><a href="#"><img src="images/logo.gif" alt="" title="" border="0" /></a></div>
    
    <div class="right_header">Welcome Admin, <a href="#">Visit site</a> | <a href="#" class="messages">(3) Messages</a> | <a href="#" class="logout">Logout</a></div>
    <div id="clock_a"></div>
    </div>
    
    <div class="main_content">
    
                    <div class="menu">
                    <ul>
                    <li><a class="current" href="index.html">Admin Home</a></li>
                    <li><a href="list.html">Cadastros<!--[if IE 7]><!--></a><!--<![endif]-->
                    <!--[if lte IE 6]><table><tr><td><![endif]-->
                        <ul>
                        <li><h:link outcome="ListarCliente" value="Clientes"/></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        </ul>
                    <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                    </li>
                    <li><a href="login.html">Manage Users<!--[if IE 7]><!--></a><!--<![endif]-->
                    <!--[if lte IE 6]><table><tr><td><![endif]-->
                        <ul>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a class="sub1" href="" title="">sublevel2<!--[if IE 7]><!--></a><!--<![endif]-->
                        <!--[if lte IE 6]><table><tr><td><![endif]-->
                            <ul>
                                <li><a href="" title="">sublevel link</a></li>
                                <li><a href="" title="">sulevel link</a></li>
                                <li><a class="sub2" href="#nogo">sublevel3<!--[if IE 7]><!--></a><!--<![endif]-->
                        
                                <!--[if lte IE 6]><table><tr><td><![endif]-->
                                    <ul>
                                        <li><a href="#nogo">Third level-1</a></li>
                                        <li><a href="#nogo">Third level-2</a></li>
                                        <li><a href="#nogo">Third level-3</a></li>
                                        <li><a href="#nogo">Third level-4</a></li>
                                    </ul>
                        
                                <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                                </li>
                                <li><a href="" title="">sulevel link</a></li>
                            </ul>
                        <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                        </li>
                    
                         <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        </ul>
                    <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                    </li>
                    <li><a href="login.html">Manage Orders<!--[if IE 7]><!--></a><!--<![endif]-->
                    <!--[if lte IE 6]><table><tr><td><![endif]-->
                        <ul>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a class="sub1" href="" title="">sublevel2<!--[if IE 7]><!--></a><!--<![endif]-->
                        <!--[if lte IE 6]><table><tr><td><![endif]-->
                            <ul>
                                <li><a href="" title="">sublevel link</a></li>
                                <li><a href="" title="">sulevel link</a></li>
                                <li><a class="sub2" href="#nogo">sublevel3<!--[if IE 7]><!--></a><!--<![endif]-->
                        
                                <!--[if lte IE 6]><table><tr><td><![endif]-->
                                    <ul>
                                        <li><a href="#nogo">Third level-1</a></li>
                                        <li><a href="#nogo">Third level-2</a></li>
                                        <li><a href="#nogo">Third level-3</a></li>
                                        <li><a href="#nogo">Third level-4</a></li>
                                    </ul>
                        
                                <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                                </li>
                                <li><a href="" title="">sulevel link</a></li>
                            </ul>
                        <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                        </li>
                    
                         <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        </ul>
                    <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                    </li>
                    <li><a href="login.html">Settings<!--[if IE 7]><!--></a><!--<![endif]-->
                    <!--[if lte IE 6]><table><tr><td><![endif]-->
                        <ul>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        <li><a class="sub1" href="" title="">sublevel2<!--[if IE 7]><!--></a><!--<![endif]-->
                        <!--[if lte IE 6]><table><tr><td><![endif]-->
                            <ul>
                                <li><a href="" title="">sublevel link</a></li>
                                <li><a href="" title="">sulevel link</a></li>
                                <li><a class="sub2" href="#nogo">sublevel3<!--[if IE 7]><!--></a><!--<![endif]-->
                        
                                <!--[if lte IE 6]><table><tr><td><![endif]-->
                                    <ul>
                                        <li><a href="#nogo">Third level-1</a></li>
                                        <li><a href="#nogo">Third level-2</a></li>
                                        <li><a href="#nogo">Third level-3</a></li>
                                        <li><a href="#nogo">Third level-4</a></li>
                                    </ul>
                        
                                <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                                </li>
                                <li><a href="" title="">sulevel link</a></li>
                            </ul>
                        <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                        </li>
                    
                         <li><a href="" title="">Lorem ipsum dolor sit amet</a></li>
                        </ul>
                    <!--[if lte IE 6]></td></tr></table></a><![endif]-->
                    </li>
                    <li><a href="">Templates</a></li>
                    <li><a href="">Custom details</a></li>
                    <li><a href="">Contact</a></li>
                    </ul>
                    </div> 
                    
                    
                    
                    
    <div class="center_content">   
    
    <div class="right_content">            
        
    <h2>Clientes</h2>
     
    <h:form>
    	<h:messages showDetail="true" showSummary="true" />
	    <h:dataTable id="rounded-corner" value="#{clienteMB.carregarCliente()}" var="item">
	    	<h:column>
		    	<f:facet name="header">
		      		<h:link value="ID" />
		      	</f:facet>
		    	<h:outputText value="#{item.id}"/>
		 	</h:column>
		 	<h:column>
		    	<f:facet name="header">
		      		<h:outputText value="Nome" />
		      	</f:facet>
		    	<h:outputText value="#{item.nome}"/>
		 	</h:column>
		 	<h:column>
		    	<f:facet name="header">
		      		<h:outputText value="Fone" />
		      	</f:facet>
		    	<h:outputText value="#{item.fone}"/>
		 	</h:column>
		 	<h:column>
		    	<f:facet name="header">
		      		<h:outputText value="Celular" />
		      	</f:facet>
		    	<h:outputText value="#{item.celular}"/>
		 	</h:column>
		 	<h:column>
		    	<f:facet name="header">
		      		<h:outputText value="Email" />
		      	</f:facet>
		    	<h:outputText value="#{item.email}"/>
		 	</h:column>
		 	<h:column>	    	
		      	<h:commandButton action="#{clienteMB.deletarCliente()}" value="Excluir">
		      		<f:setPropertyActionListener target="#{clienteMB.clienteSelecionado}" value="#{item}" />
	  			</h:commandButton>
		 	</h:column>
	    </h:dataTable>
		 
		 <h:link outcome="CadCliente" class="bt_green">
	     	<span class="bt_green_lft"></span><strong>Adicionar Cliente</strong><span class="bt_green_r"></span>
	     </h:link>
	     <h:link outcome="CadCliente" class="bt_blue">
	     	<span class="bt_blue_lft"></span><strong>Relatório</strong><span class="bt_blue_r"></span>
	     </h:link>
		</h:form>   	 
     
     
        <div class="pagination">
        <span class="disabled">prev</span><span class="current">1</span><a href="">2</a><a href="">3</a><a href="">4</a><a href="">5</a>?<a href="">10</a><a href="">11</a><a href="">12</a>...<a href="">100</a><a href="">101</a><a href="">next</a>
        </div> 
     
     </div><!-- end of right content-->
            
                    
  </div>   <!--end of center content -->               
                    
                    
    
    
    <div class="clear"></div>
    </div> <!--end of main content-->


</div>		
</body>
</html>

Resolvido o problema da formatação.
Foi só alterar o h:form que continuou pegando as propriedades do meu CSS.

<h:form prependId="false"> 

Valeu!