var sElemDiv = new Array('practice_areas');

function show(divId){

	for(iCtr=0; iCtr<sElemDiv.length; iCtr++){
		if((divId==sElemDiv[iCtr])&&(document.getElementById(divId).style.display=="none")){
			document.getElementById(sElemDiv[iCtr]).style.display="block";
			document.getElementById(sElemDiv[iCtr]+"_lnk").className="gas_eng_active";
		} else {
			document.getElementById(sElemDiv[iCtr]).style.display="none";
			document.getElementById(sElemDiv[iCtr]+"_lnk").className="gas_eng_inacive";
		}
	}
}