I'm trying to create a simple contact form that e-mails the form contents to a specific address. The e-mail is being sent just fine, but the variables I'm using in my controller code aren't being set by the actionFunction prior to sending out the e-mail. Here's the code for form:

<apex:outputPanel id="contactFormArea">
    <apex:form id="emailform" rendered="{!Not(sent)}" >
        <table width="100%" border="0" cellspacing="0" cellpadding="4" class="css3Box">
    	    <tr>
       		<td width="23%" align="right" valign="top" class="page-content">Name:</td>
        	<td width="77%" align="left" valign="top"><apex:outputText value="{!yourname}" id="yourname" styleClass="page-content" /></td>
    	    </tr>
            <tr>
        	<td align="right" valign="top" class="page-content">E-Mail:</td>
        	<td align="left" valign="top"><apex:inputText value="{!youremail}" id="youremail" maxlength="80" size="40" styleClass="page-content" /></td>
    	    </tr>
    	    <tr>
        	<td align="right" valign="top" class="page-content">Phone:</td>
        	<td align="left" valign="top"><apex:inputText value="{!yourphone}" id="yourphone" maxlength="80" size="40" styleClass="page-content" /></td>
    	    </tr>
    	    <tr>
        	<td align="right" valign="top" class="page-content">Category:</td>
        	<td align="left" valign="top">
           	    <apex:selectList id="subject" size="1" >
            	        <apex:selectoption itemLabel="Site Issue/Problem" itemValue="Problem"></apex:selectoption>
            	        <apex:selectoption itemLabel="Question" itemValue="Question"></apex:selectoption>
     		    </apex:selectList>    
        	</td>
    	    </tr>
    	    <tr>
        	<td align="right" valign="top" class="page-content">Message:</td>
        	<td align="left" valign="top"><apex:inputTextarea value="{!body}" id="body" rows="6" cols="40" styleClass="page-content" /></td>
   	    </tr>
    	    <tr>
                <td align="right" valign="top">&nbsp;</td>
        	<td align="left" valign="top"><apex:commandButton value="SEND" id="sendButton" onclick="sendEmail();"/></td>
    	    </tr>
	</table>			
	<apex:actionFunction name="sendEmail" action="{!sendIt}" reRender="contactFormArea" immediate="true">
		<apex:param name="youremail" assignTo="{!youremail}" value=""/>
		<apex:param name="yourphone" assignTo="{!yourphone}" value=""/>
		<apex:param name="subject" assignTo="{!subject}" value=""/>
		<apex:param name="body" assignTo="{!body}" value=""/>
	</apex:actionFunction>
    </apex:form>
    <apex:outputPanel rendered="{!(sent)}">
    <table width="100%" border="0" cellspacing="0" cellpadding="4" class="css3Box">
	<tr>
	    <td>e-mail sent</td>
	</tr>
    </table>
    </apex:outputPanel>
</apex:outputPanel>

 And here's the controller code:

// Constructor
	public MIQ_ContactExtensionController(ApexPages.StandardController stdController) {
		sent = false;
		yourname = userInfo.getName();
	}

	public PageReference sendIt() {
	 params = ApexPages.CurrentPage().getParameters();
         system.debug('+++++++++++++++++++++++++++++++++++++++++++Params: '+params);

         // Define the email
	 Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage();

	 String[] toAddresses = new String[] { 'steve.manatt@acxiom.com' };
	 
	 if (yourphone == '') {
	 	yourphone = 'N/A';
	 }

	 // Sets the paramaters of the email
	 email.setSubject( subject );
	 email.setToAddresses( toAddresses );
	 email.setPlainTextBody( 'From: ' + yourname + ' (' + youremail + ') \n\n\r' + 'Subject: ' + subject + '\n\n\r' + 'Message: ' + body + '\n\n\r' );

	 // Sends the email
	 Messaging.SendEmailResult [] r = Messaging.sendEmail(new Messaging.SingleEmailMessage[] {email});

	 sent = true;
	 system.debug('++++++++++++++++++++++++++++++++++++e-mail: '+youremail);
	 return null;
	}

 The debug logs for "params" show the form values being sent in the form of "jcref.emailform.youremail=test@test.com"; however, the param variable "youremail" is blank.

This really doesn't seem like something very hard, but I've spent two+ days on it. I sure hope someone out there can spot the problem.

Thanks in advance.