function changecont(n){
		//var ln = document.getElementsByClassName("cdesc").length;
		var ln = 9;
		for(var i=0; i<ln; i++){
			document.getElementById("cdesc_" + i).style.display="none";
			//document.getElementsByClassName("cdesc")[i].style.display="none";
		}
		document.getElementById("cdesc_" + n).style.display="block";
		//document.getElementsByClassName("cdesc")[n].style.display="block";
	}
	
	
	document.getElementsByClassName = function (className) {
    var i, j, eltClass;
    var objAll = document.getElementsByTagName ? document.getElementsByTagName("*") : document.all;
    var objCN = new Array();
    for (i = 0; i < objAll.length; i++) {
        eltClass = objAll[i].className.split(/\s+/);
        for (j = 0; j < eltClass.length; j++) {
            if (eltClass[j] == className) {
                objCN.push(objAll[i]);
                break;
            }
        }
    }
    return objCN;
}



function dispcont(n){
	//alert(document.getElementById("oilmenu_desc_" + n));
	var ln = 4;
		for(var i=0; i<ln; i++){
			document.getElementById("oilmenu_desc_" + i).style.display="none";
			//document.getElementsByClassName("cdesc")[i].style.display="none";
		}
		document.getElementById("oilmenu_desc_" + n).style.display="block";
}



function changemap(){
	if(document.getElementById("smallmap").style.display=="none"){
		document.getElementById("smallmap").style.display="block";
		document.getElementById("largemap").style.display="none";
	}else{
		document.getElementById("smallmap").style.display="none";
		document.getElementById("largemap").style.display="block";
	}
	
}