function showdiv(divnum,divbefor){
        for(i=1;i<=divnum;i++){
				if(i==divbefor){
						document.getElementById("Nav_"+i).className = "on"
						document.getElementById("Content_"+i).className ="block";
				}else{
						document.getElementById("Nav_"+i).className = ""
						document.getElementById("Content_"+i).className ="none";
				}
        }
}

function showdiv1(divnum,divbefor){
        for(i=1;i<=divnum;i++){
				if(i==divbefor){
						document.getElementById("Nav1_"+i).className = "on"
						document.getElementById("Content1_"+i).className ="block";
				}else{
						document.getElementById("Nav1_"+i).className = "off"
						document.getElementById("Content1_"+i).className ="none";
				}
        }
}