var rav = new Array('ravin0', 'ravin1', 'ravin2', 'ravin3', 'ravin4', 'ravin5', 'ravin6', 'ravin7');
var preds = new Array('preds0', 'preds1', 'preds2', 'preds3', 'preds4', 'preds5', 'preds6', 'preds7');
var ocbsh = new Array('ocbsh0', 'ocbsh1', 'ocbsh2', 'ocbsh3', 'ocbsh4', 'ocbsh5', 'ocbsh6');
var mol = new Array('mol0', 'mol1', 'mol2', 'mol3', 'mol4', 'mol5', 'mol6', 'mol7');
var oc = new Array('0', '0', '0', '0');
var oca = new Array(rav, preds, ocbsh, mol);
var cpage;
var mem;
function showHide(num){
	for(i=0; i<oc.length; i++){
		if (oc[i] == '1'){
			cpage = oca[i];
			oc[i] = '0';
			for(j=0; j<cpage.length; j++){
				document.getElementById(cpage[j]).style.display = "none";
			}
			break;
		}
	}
	if(mem != oca[num]){
		if(oc[num] == '0'){
			opage = oca[num];
			oc[num] = '1';
			mem = oca[num];
			for(i=0; i<opage.length; i++){
				document.getElementById(opage[i]).style.display = "";
			}
		}
	}else{
		mem = 'undefined';
	}
}