if(document.images) 
{
    txt = new Array();
    txt[1] = new Image();
    txt[1].src = "/weddingstationery/images/blank.gif";
    txt[2] = new Image();
    txt[2].src = "/weddingstationery/images/designs_t.gif";
    txt[3] = new Image();
    txt[3].src = "/weddingstationery/images/samples_t.gif";
    txt[4] = new Image();
    txt[4].src = "/weddingstationery/images/order_t.gif";
    txt[5] = new Image();
    txt[5].src = "/weddingstationery/images/bespoke_t.gif";
    txt[6] = new Image();
    txt[6].src = "/weddingstationery/images/products_t.gif";
    txt[7] = new Image();
    txt[7].src = "/weddingstationery/images/index_t.gif";
}

function showexplaintxt(no) 
{
	if(document.images) 
	{
    	document.images["explaintxt"].src = txt[no].src;
	}
}