function bigFont() {
var currentText = document.getElementsByTagName('p');
var currentSize;
  var newSize;
  for(i=0;i<currentText.length;i++)
 {
       if (currentText[i].style.fontSize == ""){
	  currentSize = '100%';
       }else{
          currentSize = currentText[i].style.fontSize;}
       newSize=parseInt(currentSize)+10;
 	currentText[i].style.fontSize = newSize + '%'
  }
}

function smallFont() {
var currentText = document.getElementsByTagName('p');
var currentSize;
  var newSize;
  for(i=0;i<currentText.length;i++)
 {
       if (currentText[i].style.fontSize == ""){
	  currentSize = '100%';
       }else{
          currentSize = currentText[i].style.fontSize;}
       newSize=parseInt(currentSize)-10;
 	currentText[i].style.fontSize = newSize + '%'
  }
}

function defaultFont() {
var currentText = document.getElementsByTagName('p');
var currentSize='100%';
  var newSize;
  for(i=0;i<currentText.length;i++)
 {
    newSize=parseInt(currentSize);
 	currentText[i].style.fontSize = newSize + '%'
  }
}



function validate() {
msv=mainform.surname.value;
if (msv=='') 
{
alert('We will need at least a surname. Please try again.');
event.returnValue=false;
}
if (!(mainform.Sex[0].checked || mainform.Sex[1].checked)) 
{
alert('Your sex is a required field. Please try again.');
event.returnValue=false;
}
}