#mainNavLeft a{
	display:block;
	position:absolute;
	left:0px;
	overflow:hidden;
	width:35px;
}

#mainNavLeft a span{
	display:none;
}


#mainNavLeft a#home, #mainNavLeft a#home_on{
	top:0px;
	height:52px;
	background-image:url(mainNavLeft/home.gif);
	background-position:0 0;
}
	#mainNavLeft a:hover#home{
		background-position:-35 0;
	}
	
	 #mainNavLeft a#home_on{
	 	background-position:-70 0;
	 }

#mainNavLeft a#about_us, #mainNavLeft a#about_us_on{
	top:46px;
	height:76px;
	background-image:url(mainNavLeft/about_us.gif);
	background-position:0 0;
}
	#mainNavLeft a:hover#about_us{
		background-position:-35 0;
	}
	#mainNavLeft a#about_us_on{
	 	background-position:-70 0;
	 }
	
#mainNavLeft a#project_gallery, #mainNavLeft a#project_gallery_on{
	top:114px;
	height:121px;
	background-image:url(mainNavLeft/project_gallery.gif);
	background-position:0 0;
}
	#mainNavLeft a:hover#project_gallery{
		background-position:-35 0;
	}
	#mainNavLeft a#project_gallery_on{
	 	background-position:-70 0;
	 }
	
#mainNavLeft a#contact_us, #mainNavLeft a#contact_us_on{
	top:228px;
	height:89px;
	background-image:url(mainNavLeft/contact_us.gif);
	background-position:0 0;
}
	#mainNavLeft a:hover#contact_us{
		background-position:-35 0;
	}
	#mainNavLeft a#contact_us_on{
	 	background-position:-70 0;
	 }