<script type = "text/javascript">
        var First_Array = new Array();
        function reset_Form2() {document.extraInfo.reset();}
        function showList1() {document.getElementById("favSports").style.visibility="visible";}
        function showList2() {document.getElementById("favSubjects").style.visibility="visible";}
        function hideProceed() {document.getElementById('proceed').style.visibility='hidden';}

    function proceedToSecond ()
	{
        document.getElementById("div1").style.visibility="hidden";
        document.getElementById("div2").style.visibility="visible";
        document.getElementById("favSports").style.visibility="hidden";
        document.getElementById("favSubjects").style.visibility="hidden";
	}

	function backToFirst () {
		document.getElementById("div1").style.visibility="visible";
		document.getElementById("div2").style.visibility="hidden";
		document.getElementById("favSports").style.visibility="visible";
		document.getElementById("favSubjects").style.visibility="visible";
	}

	function reset_Form(){
		document.personalInfo.reset();
		document.getElementById("favSports").style.visibility="hidden";
		document.getElementById("favSubjects").style.visibility="hidden";
	}

	function isValidName(firstStr) {
		var firstPat = /^([a-zA-Z]+)$/;

		var matchArray = firstStr.match(firstPat);
		if (matchArray == null) {
			alert("That's a weird name, try again");
			return false;
		}

		return true;
	}

	function isValidZip(zipStr) {
		var zipPat =/[0-9]{5}/;
		var matchArray = zipStr.match(zipPat);
		if(matchArray == null) {
			alert("Zip is not in valid format");
			return false;
		}
    	return true;
	}

	function isValidApt(aptStr) {
		var aptPat = /[\d]/;
		var matchArray = aptStr.match(aptPat);
		if(matchArray == null) {
			if (aptStr=="") {
				return true;
			}
			alert("Apt is not proper format");
			return false;
		}

        return true;
	}

	function isValidDate(dateStr) {
		//requires 4 digit year:

		var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/;

        var matchArray = dateStr.match(datePat);
		if (matchArray == null) {
			alert("Date is not in a valid format.");
			return false;
		}
		return true;
	}

	function checkRadioFirst() {
		var rb = document.personalInfo.salutation;

		for(var i=0;i<rb.length;i++) {
			if(rb[i].checked) {
				return true;
			}
		}
        alert("Please specify a salutation");
		return false;
	}

	function checkCheckFirst() {
		var rb = document.personalInfo.operatingSystems;

		for(var i=0;i<rb.length;i++) {
			if(rb[i].checked) {
				return true;
			}
		}
        alert("Please specify an operating system") ;
		return false;
	}

	function checkSelectFirst() {
		if ( document.personalInfo.sports.selectedIndex == -1)
		{
			alert ( "Please select a sport" );
			return false;
		}
		return true;
	}

	function checkRadioSecond() {
		var rb = document.extraInfo.referral;

		for(var i=0;i<rb.length;i++) {
			if(rb[i].checked) {
				return true;
			}
		}

        alert("Please select form of referral");
		return false;
	}

	function checkCheckSecond() {
		var rb = document.extraInfo.officeSupplies;

		for(var i=0;i<rb.length;i++) {
			if(rb[i].checked) {
				return true;
			}
		}
        alert("Please select an office supply option");
		return false;
	}

	function checkSelectSecond() {
		if ( document.extraInfo.colorPick.selectedIndex == 0 ) {
			alert ( "Please select a favorite color" );
			return false;
		}
        return true;
	}

    function check_Form(){
        var retvalue = isValidDate(document.personalInfo.date.value);
		if(retvalue) {

            retvalue = isValidZip(document.personalInfo.zipCode.value);
            if(retvalue) {

                retvalue = isValidName(document.personalInfo.nameFirst.value);
                if(retvalue) {

                    retvalue = checkRadioFirst();
                    if(retvalue) {

                        retvalue = checkCheckFirst();
                        if(retvalue) {

                            retvalue = checkSelectFirst();
                            if(retvalue) {

                                retvalue = isValidApt(document.personalInfo.aptNum.value);
                                if(retvalue){
                                    document.getElementById('proceed').style.visibility='visible';

                                    var rb = document.personalInfo.salutation;

		                            for(var i=0;i<rb.length;i++) {
                                        if(rb[i].checked) {
                                            var salForm = rb[i].value;
                                        }
		                            }

                                    var SportsOptions = "";
                                    for(var j=0;j<document.personalInfo.sports.length;j++){
                                        if ( document.personalInfo.sports.options[j].selected){
                                            SportsOptions += document.personalInfo.sports.options[j].value + " ";
                                        }
                                    }

                                    var SubjectsOptions= "";
                                    for(var k=0;k<document.personalInfo.subjects.length;k++){
                                        if ( document.personalInfo.subjects.options[k].selected){
                                            SubjectsOptions += document.personalInfo.subjects.options[k].value + " ";
                                        }

                                    }

                                    var osBox = document.personalInfo.operatingSystems;
                                    var OSOptions = "";
                                    for(var y=0;y<osBox.length;y++) {
                                        if(osBox[y].checked) {
                                            OSOptions += osBox[y].value + " ";
                                        }
                                    }


                                    First_Array[0] = salForm;
                                    First_Array[1] = document.personalInfo.nameFirst.value;
                                    First_Array[2] = document.personalInfo.nameMiddle.value;
                                    First_Array[3] = document.personalInfo.nameLast.value;
                                    First_Array[4] = document.personalInfo.address.value;
                                    First_Array[5] = document.personalInfo.aptNum.value;
                                    First_Array[6] = document.personalInfo.city.value;
                                    for(var l=0; l<document.personalInfo.state.length; l++) {
                                        if (document.personalInfo.state.options[l].selected) {
                                            First_Array[7] = document.personalInfo.state[l].value;
                                        }
                                    }
                                    First_Array[8] = document.personalInfo.zipCode.value;
                                    First_Array[9] = document.personalInfo.date.value;
                                    First_Array[10] = document.personalInfo.phone.value;
                                    First_Array[11] = SportsOptions;
                                    First_Array[12] = SubjectsOptions;
                                    First_Array[13] = OSOptions;

                                    alert("Everything looks good.");
                                    document.getElementById('validityButton').style.visibility='hidden';
                                }
                            }
                        }
                    }
                }
            }
        }
    }

	/*function formAction2() {
		var retvalue;
		retvalue = checkRadioSecond();
		if(!retvalue) {
			return retvalue;
		}

		retvalue = checkCheckSecond();
		if(!retvalue) {
			return retvalue;
		}

		return checkSelectSecond() ;
	}   */
</script>

This is just a sample of the code, there are alot more functions, but I thought the error might be related to surrounding code. I have absolutely no idea why, as I know all the surrounding functions execute, and First_Array is populated.

However when I click the Proceed to Second button, the onclick attribute does not execute because Firebug says proceedToSecond is not a function

button code:

<input type="button" id="proceed" name="proceedToSecond" onclick="proceedToSecond();" value="Proceed to second form">