function switchVisibleBlock(strBlockToHide, strBlockToShow)
{
    document.getElementById(strBlockToHide).style.display = "none";
    document.getElementById(strBlockToShow).style.display = "block";
    // Ensure that the drop down list has the "Please Select" as the selected item.
    document.getElementById('selOptions').selectedIndex = 0;
}
function sendButtonClicked(strBlockToHide, strBlockToShow)
{
    var strSubject = document.getElementById('selOptions').value;		
    // Ensure that a value is provided to the e-mail subject line
    if (strSubject != "")
    {
        document.location.replace('mailto:customerservices@moneysupermarket.com?subject=' + strSubject);
        switchVisibleBlock(strBlockToHide, strBlockToShow);
    }
    else
    {
	    alert("Please ensure you have selected a subject from the list.");
    }
}