Multi page form

Im trying to make a multi page form web and when i get to phase 3 nothign happends! It should take me to a review of the info i entered before submiting the data ! Any help figuring this out would be apreciated !

form#multiphase{ border:#000 1px solid; padding:24px; width:350px; } form#multiphase > #phase2, #phase3, #show_all_data{ display:none; }
</head>
Business Name : <input id="bussinesname" name="bussinesname"></br>
Legal Entity : <input id="legalentity" name="legalentity"></br>
Full-time Employees : <input id="fulltimeemployees" name="fulltimeemployees"></br>
Years in Bussines : <input id="yearsinbussines" name="yearsinbussines"></br>
Years of Owner Experience within Industry: <input id="yearsofownerexperiencewithinindustry" name="yearsofownerexperiencewithinindustry"></br>
Part-time Employees : <input id="parttimeemployees" name="parttimeemployees"></br>
Annual Revenue : <input id="annualrevenue" name="annualrevenue"></br>
Annual Payroll : <input id="annualpayroll" name="annualpayroll"></br>
Subcontractors : <input id="subcontractors" name="subcontractors"></br>
<button onclick="processPhase1 ()"> Next Step </button>
Industry Division : <input id="industrydivision" name="industrydivision"></br>
Industry Group : <input id="industrygroup" name="industrygroup"></br>
Industry Service : <input id="industryservice" name="industryservice"></br>
Coverage Options : <input id="coverageoptions" name="coverageoptions"></br>
<button onclick="processPhase2 ()"> Next Step </button>
First Name : <input id="firstname" name="firstname"></br>
Last Name : <input id="lastname" name="lastname"></br>
Business Adress : <input id="bussinesadress" name="bussinessadress"></br>
City : <input id="city" name="city"></br>
State: <input id="state" name="state"></br>
Zip Code : <input id="zipcode" name="zipcode"></br>
Day Phone : <input id="dayphone" name="dayphone"></br>
Evening Phone : <input id="eveningphone" name="eveningphone"></br>
Email : <input id="email" name="email"></br>
<button onclick="processPhase3 ()"> Continue </button>
Business Name :
Legal Entity :
Full-time Employees :
Years in Bussines :
Years of Owner Experience within Industry:
Part-time Employees :
Annual Revenue :
Annual Payroll :
Subcontractors :
Industry Division :
Industry Group :
Industry Service :
Coverage Options :
First Name :
Last Name :
Business Adress :
City :
State:
Zip Code :
Day Phone :
Evening Phone :
Email :
Submit Data
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