function show_div(id) {
	if(document.getElementById("show_export").checked == true) {
		document.getElementById(id).style.display="";
	} else {
		document.getElementById(id).style.display="none";
	}
}

function show_adv_option_div(id) {
   if(document.getElementById("show_advanced_option").checked == true) {
     document.getElementById(id).style.display="";
   } else {
     document.getElementById(id).style.display="none";
   }
 }

function toggle_full_view() {
	
   if(document.getElementById("advanced_options").style.display == "none") {
     	document.getElementById("advanced_options").style.display = "block";
     	document.getElementById("sample_result_window").style.display= "none";
   } else {
	document.getElementById("advanced_options").style.display= "none";
     	document.getElementById("sample_result_window").style.display = "block";
   }
 }

function check_fields() {
	if(document.form.url.value == ""){
	  alert('Please fill in the URL');
     return false;
	}
	
	lengthValue = document.form.url.value;
 
  if(lengthValue.length != 0)
  {
    var j = new RegExp();
    j.compile("^[A-Za-z0-9-]+\.[A-Za-z0-9]+"); 
    //lengthValue = document.form.url.value;
    
    if (!j.test(lengthValue))
    { 
      alert("Please enter valid URL.\nEg: \"http://www.domain.com\"");
      //str+="\n- Please enter valid URL.\nEg: \"http://www.domain.com\"";  
      return false;
    }
  }

	if(document.form.show_export.checked == true && (document.form.exp_name.value == "" || document.form.exp_email.value == "")) {
		alert('Please fill in your name and email if you need us to send reports to you');
		return false;
	}
	return true;
}