function toggle(area){
	var obj = document.getElementById(area);
	if (obj) {
		if (obj.style.display==''){
			obj.style.display='none';
		}
		else {
			obj.style.display='';
		}
	}
}

function doHourglass()
{	
document.body.style.cursor = 'wait';
if(document.getElementById("calcflag")!=null){
	document.body.style.cursor = 'default';
}
}

function cursor_clear() {
document.body.style.cursor = 'default';
}


function click(e) {
                  if (document.all) {
                    if (event.button==2||event.button==3) {
                      oncontextmenu='return false';

                    }
                  }

                  if (document.layers) {
                    if (e.which == 3) {
                      oncontextmenu='return false';
                    }
                  }
                }

                if (document.layers) {
                    document.captureEvents(Event.MOUSEDOWN);
                }
                document.onmousedown=click;

                function handleKeyDown() {
                    if (window.event.keyCode == 116) {
                        event.keyCode=0;
                        event.returnValue=false;
                    }
                }
                document.onkeydown = handleKeyDown;