#mainnav li#mainnav-home a {width:95px; background-image:url(../images/mainnav/mainnav-home.jpg); width:65px; } 
#mainnav li#mainnav-company a {width:160px; background-image:url(../images/mainnav/mainnav-company-overview.jpg);} 
#mainnav li#mainnav-operations a {width:104px; background-image:url(../images/mainnav/mainnav-operations.jpg);} 
#mainnav li#mainnav-projects a {width:82px; background-image:url(../images/mainnav/mainnav-projects.jpg);}
#mainnav li#mainnav-careers a {width:82px; background-image:url(../images/mainnav/mainnav-careers.jpg);}  
#mainnav li#mainnav-exploration a {width:113px; background-image:url(../images/mainnav/mainnav-exploration.jpg);} 
#mainnav li#mainnav-investors a {width:93px; background-image:url(../images/mainnav/mainnav-investors.jpg);} 
#mainnav li#mainnav-responsibility a {width:306px; background-image:url(../images/mainnav/mainnav-responsibility.jpg); width:311px;}