#home
{
	background: url(../images/home_menu.gif) no-repeat;
	
}
#home a:hover, #home a:focus, #home a:active 
{
	background: url(../images/home_menu_ro.gif) no-repeat;
}
#service
{
	background: url(../images/service_menu.gif) no-repeat;
}
#service a:hover, #service a:focus, #service a:active
{
	background: url(../images/service_menu_ro.gif) no-repeat;
}
#technology
{
	background: url(../images/technology_menu.gif) no-repeat;
}
#technology a:hover, #technology a:focus, #technology a:active
{
	background: url(../images/technology_menu_ro.gif) no-repeat;
}
#product
{
	background: url(../images/product_menu.gif) no-repeat;
}
#product a:hover, #product a:focus, #product a:active
{
	background: url(../images/product_menu_ro.gif) no-repeat;
}
#about
{
	background: url(../images/about_menu.gif) no-repeat;
}
#about a:hover, #about a:focus, #about a:active
{
	background: url(../images/about_menu_ro.gif) no-repeat;
}
#aboutwater
{
	background: url(../images/aboutwater_sub.gif) no-repeat;
}
#aboutwater a:hover, #aboutwater a:focus, #aboutwater a:active
{
	background: url(../images/aboutwater_sub_ro.gif) no-repeat;
}
#whypurified
{
	background: url(../images/whypurified_sub.gif) no-repeat;
}
#whypurified a:hover, #whypurified a:focus, #whypurified a:active
{
	background: url(../images/whypurified_sub_ro.gif) no-repeat;
}
#qsvt
{
	background: url(../images/qsvt_sub.gif) no-repeat;
}
#qsvt a:hover, #qsvt a:focus, #qsvt a:active
{
	background: url(../images/qsvt_sub_ro.gif) no-repeat;
}
#reverseosmosis
{
	background: url(../images/reverseosmosis_sub.gif) no-repeat;
}
#reverseosmosis a:hover, #reverseosmosis a:focus, #reverseosmosis a:active
{
	background: url(../images/reverseosmosis_sub_ro.gif) no-repeat;
}
#tanwing
{
	background: url(../images/tanwing_sub.gif) no-repeat;
}
#tanwing a:hover, #tanwing a:focus, #tanwing a:active
{
	background: url(../images/tanwing_sub_ro.gif) no-repeat;
}


ul#menu {
list-style:none;
margin:0;
padding:0;
}

.nav a{  
display:block;  
text-decoration:none; 
text-indent:-30000px;      
}