When I load the page, it now shows a copy of my page instead of the button image. This is my VF page:
<apex:form >
<center>
<apex:pageBlock mode="maindetail" >
<apex:pageBlockButtons location="Top" >
<div style="width:400px;">
<apex:commandButton style="background:#99EB99;" value="Escalate To Client" onClick="Escalate();" rendered="{!IF(Case.Escalate_to_Client__c = false, TRUE,FALSE)}"/>
<apex:commandButton style="background:#99EB99;" value="Rescind Escalation To Client" onClick="Rescind();" rendered="{!IF(Case.Escalate_to_Client__c = true, TRUE,FALSE)}"/>