function change(el){
    document.getElementById('product-image').src = "/images/product-images/"+el.id;
  }
  
  function section_on(el, section){
      document.getElementById('features').style.display = "none";
      document.getElementById('overview').style.display = "none";
      document.getElementById(section).style.display = "block";
      
      document.getElementById('features_btn').className = "notactive";
      document.getElementById('overview_btn').className = "notactive";
      el.className = "active";
  }

function validateListForm(){
    $('checking').style.display = "block";
    
    setTimeout(function(){ 
      $('checking').style.display = "none";
      }, 600
    )
    
    if((!$F('name')) || (!$F('email'))){
      	Effect.Appear($('errors'));
	  	if(!$F('name')){
			$('lname').style.color = "#C30000";
			$('lname').style.background = "#FFD7D7";
		}
		else{
			$('lname').style.color = "";
			$('lname').style.background = "";
		}
		if(!$F('email')){
	  		$('lemail').style.color = "#C30000";
			$('lemail').style.background = "#FFD7D7";
		}
	  	else {
			$('lemail').style.color = "";
			$('lemail').style.background = "";
	  	}//end if
	}
    else{
      document.listform.submit();
	}
  }
  
function validateLitForm(){
    $('checking').style.display = "block";
    
    setTimeout(function(){ 
      $('checking').style.display = "none";
      }, 600
    )
    
    if((!$F('name')) || (!$F('email')) || (!$F('zip'))){
      	Effect.Appear($('errors'));
	  	if(!$F('name')){
			$('lname').style.color = "#C30000";
			$('lname').style.background = "#FFD7D7";
		}
		else{
			$('lname').style.color = "";
			$('lname').style.background = "";
		}
		if(!$F('email')){
	  		$('lemail').style.color = "#C30000";
			$('lemail').style.background = "#FFD7D7";
		}
	  	else {
			$('lemail').style.color = "";
			$('lemail').style.background = "";
	  	}//end if
		if(!$F('zip')){
	  		$('lzip').style.color = "#C30000";
			$('lzip').style.background = "#FFD7D7";
		}
	  	else {
			$('lzip').style.color = "";
			$('lzip').style.background = "";
	  	}//end if
	}
    else{
      document.litform.submit();
	}
  }