.heading1 {
	font-family: "Monotype Corsiva";
	font-size: 24px;
	font-style: italic;
	color: #006600;
	text-align: center;
}
.maintext {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #006600;
	text-align: left;
	font-weight: normal;
}
.maintextcenter {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #006600;
	text-align: center;
	font-weight: normal;
}
.maintextright {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #006600;
	text-align: right;
	font-weight: normal;
}
.links {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight: bold;
	color: #003399;
	text-decoration: underline;
}
.smalltext {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 9px;
	color: #006600;
}
.boldtext1 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
	font-weight: bold;
	color: #006600;
}
.lighttext {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-style: normal;
	font-weight: normal;
	color: #00CC00;
}
.linkcolour {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 14px;
	font-style: normal;
	color: #009999;
	font-weight: bold;
}
.heading2 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
	font-style: oblique;
	font-weight: bold;
	text-transform: uppercase;
	color: #336633;
}
.header3 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
	font-style: normal;
	font-weight: bold;
	font-variant: normal;
	text-transform: none;
	color: #6699CC;
	text-align: center;
}
<style type="text/css">


.gallerycontainer{
position: relative;
/*Add a height attribute and set to largest image's height to prevent overlaying*/
}

.thumbnail img{
border: 1px solid #ffffcc;
margin: 0 5px 5px 0;
}

.thumbnail:hover{
background-color: transparent;
}

.thumbnail:hover img{
border: 1px solid blue;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: #ffffcc;
padding: 5px;
left: -1000px;
border: 1px dashed gray;
visibility: hidden;
color: black;
text-decoration: none;
}

.thumbnail span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 2px;
}

.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible;
top: 0;
left: 230px; /*position where enlarged image should offset horizontally */
z-index: 50;
}

</style>