JQuery :: Change Form On Click Of Appropriate Radio Button

I am new to jQuery. I want to change the form on click of the appropriate radio button.

This is my code
<s:radio name="radioButton" list="#{'os':'OS','platform':'Platform''}" value="1" />
<div id="OS_req">
<s:form name="sendreqOS" action="Login" ><br/>
<s:textfield name="vmNameOS" maxlength="30" size="20" label="VM Name" />
<s:select labelposition="left" label="Template" list="temp" name="templateNameOS"/>
<s:select labelposition="left" label="Instance Type" name="instanceTypeOS" list="#{'1':'Small','2':'Medium','3':'Large'}" />
<s:select label="Duration of use" name="durationOS" list="#
{'1':'1 week','2':'2 weeks','3':'1 month','4':'3 months','5':'6 months'}" />
<s:submit value="Submit"></s:submit>
</s:form></div>
<div id="Plat_req">
<s:form name="sendreqPlat" action="Login" ><br/>

<s:textfield name="vmNamePlat" maxlength="30" size="20" label="VM Name" />
<s:select labelposition="left" label="Template" list="temp" name="templateNameplat"/>
<s:select labelposition="left" label="Instance Type" name="instanceTypeplat" list="#{'1':'Small','2':'Medium','3':'Large'}" />
<s:select label="Duration of use" name="duration plat" list="#{'1':'1 week','2':'2 weeks','3':'1 month','4':'3 months','5':'6 months'}" />
<s:submit value="Submit"></s:submit></form></div>

On clicking 'OS' radio button I want to get the 1st form and hide second one and on clicking 'Platform' radio button I want the second form and hide the first one.