Button Problem

by Marcus

HTML

<body>

	<header></header>
    
    <form action="Send_02.php" method="post">
    	<div id="MainPage">
        
        	<div id="wlecome"><!-------------------------------------------------------WELCOME BEGIN------------------------------------------------------->
            	
                <div class="title01">Congratulations</div>
            	<div id="exp_content" style="width:92%; height:auto; font-family: 'Poiret One', cursive; font-size:13pt; color:#ffb500; text-align:center; margin:auto; padding:12px; display:block;">
                
                	You just took the most important step you'll ever take towards bringing your Business to life! Completing this questionnaire will give us a solid foundation for building your Company Image and eliminate the guess work from what type of designs will best suit your Company. There's a total of 9 sections which hone in on the most vital aspects of ensuring effectiveness with every action taken with the intent of driving your Business forwards.<br /><br /><br /><br />
                    
                    <div class="sub_title01">1.  Contact and Location</div>
                This section outlines your general contact info and location of your Business.<br /><br />
                
                <div class="sub_title01">2.  General Business Info</div>
                This section outlines the basics of where you currently are with running/starting your business.<br /><br />
                
                <div class="sub_title01">3.  Your Entrepreneur Philosophy</div>
                This section sheds light onto what type of Entrepreneur you are which helps determine the methods of Business you're most likely to pursue.  Establishing this will help with custom tailoring material to suit your unique ways of doing Business and highlight your personal strengths.<br /><br />
                
                <div class="sub_title01">4.  Challenges To Triumph</div>
                This section helps identify...

CSS

/*MAIN ELEMENTS*/
	
	header{
		width:100%;
		height:40px;
		margin:auto;
		display:block;
		background-image:url(http://optiqvision.x10host.com/Pics/header.png);
		position:fixed;
		z-index:4;
		}
	
	body{
		width:100%;
		height:100%;
		/*width:1266px; height:612px;*/
		background-color:#161616;
		background-image:url(http://optiqvision.x10host.com/Pics/Background.png);
		/*background-position:top 40px center;*/
		background-position:50% 40px;
		background-size:cover;
		background-repeat:no-repeat;
		background-attachment:fixed;
		margin:auto;
		position:relative;
		display:block;
		top:40px;
		z-index:1;
		}
		
	footer{
		width:100%;
		height:40px;
		margin:auto;
		display:block;
		background-image:url(http://optiqvision.x10host.com/Pics/footer.png);
		z-index:4;
		}
		
	#MainPage {
		width:77%;
		height:auto;
		margin:auto;
		border-radius:11px;
		background: rgba(27, 27, 27, .88);
		display:block;
		
		}



/*PAGE FRAMES*/
	
	#welcome{
		width:100%;
		height:1768px;
		margin:auto;
		display:block; 
		}
		
	#page01{
		width:100%;
		height:1280px;
		margin:auto;
		display:none;
		}
		
		
		
/*LOGIC FRAMES*/
	
	
	
/*CONTENT ELEMENTS*/

	.title01{
		width:auto;
		height:auto;
		font-family:'Oswald', sans-serif;
		font-size:11vw;
		color:#ffff00;
		text-align:center;
		display:block;
		}
		@media (max-width:1266px) {
    		.title01{font-size:11vw}
    	}
		
	.sub_title01{
		width:100%;
		height:auto;
		font-family:'Oswald', sans-serif;
		font-size:16pt;
		color:#ffff00;
		text-align:center;
		display:block;
		}
	
	
	/*GADGETS*/

JavaScript

window.onload=function(){
		
		//COLLECTS PAGES
		var welc_p = document.getElementById("welcome");
		var page01 = document.getElementById("page01");
	
		//COLLECTS BUTTONS
		var start = document.getElementById("start_btn");
		
		//TOGGLES PAGES
		start.onClick=function(){
			welc_p.style.display="none";
			page01.style.display="block";
			window.location="#MainPage";
			};
	
	
	
	}//window onload//