function getElementsByClassName(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();
  
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }
  
  return elements;
}

function go(l) {
	
	location.href = l;
	
}
 
function enableOtherBox() {
	
	document.purchase.yourimage.disabled = false;
	document.purchase.yourimage.className = 'text';
	document.purchase.yourimage.focus();
	
}

function disableOtherBox() {
	
	document.purchase.yourimage.disabled = true;
	document.purchase.yourimage.className = 'textdisabled';
	
}

function setOpacity(obj, opacity) {
	
	opacity = (opacity == 100)?99.999:opacity;
	  
	// IE/Win
	obj.style.filter = "alpha(opacity:"+opacity+")";
	  
	// Safari<1.2, Konqueror
	obj.style.KHTMLOpacity = opacity/100;
	  
	// Older Mozilla and Firefox
	obj.style.MozOpacity = opacity/100;
	  
	// Safari 1.2, newer Firefox and Mozilla, CSS3
	obj.style.opacity = opacity/100;
	
}