function display(sID){
	oObj = document.getElementById(sID);
	if (oObj) {
		oObj.style.display='inline';
	}
}

function hide(sID) {
	oObj = document.getElementById(sID);
    if (oObj) {
    	oObj.style.display='none';
    }
}

function gettab(id){
    for (i=1; i<=2; i++)
    {
	    if (id == i)
    	{
    		display("box_content"+i);
    		document.getElementById("a"+i).className ='menutab-over';
    	}else{
    		hide("box_content"+i);
    		document.getElementById("a"+i).className ='menutab';
    	}
    }
}
function gettab3(y1,y2,y3,id){
	var arrY = Array();
	arrY[1] = y1;
	arrY[2] = y2;
	arrY[3] = y3;
	for(i=1;i<=3;i++){ 
	    if (id == i)
    	{
    		display("box_content"+i);
    		document.getElementById("a"+i).className ='menutab-over';
    	}else if(arrY[i]>0){
    		hide("box_content"+i);
    		document.getElementById("a"+i).className ='menutab';
    	}
	}
}