// JavaScript Document
function addLoadEvent(func) 
{
  var oldonload = window.onload;
  if (typeof window.onload != 'function') 
  {
    window.onload = func;
  } 
  else
  {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
function prepLink()
{
	var ele = document.getElementById("getDirecLink");
	//alert(ele.getAttribute("href"));
	ele.onclick = function()
	{
		return getDir();
	}
}
function getDir()
{
	//alert(document.getElementById("getDirecLink").getAttribut("href"));
		var postcode = document.getElementById("getDirForm").custPostcode.value;//
		var myUrl = "http://maps.google.co.uk/maps?f=d&hl=en&saddr=";
		myUrl+= postcode+"&daddr=DE7+5ep";
		alert(myUrl);
		var ele = document.getElementById("getDirecLink");
		ele.setAttribute("href", myUrl);
		window.open(myUrl,'window name');//
		return false;
}
addLoadEvent(prepLink);