function popwin(name,winname,w,h,scbar){
	if (parseInt(navigator.appVersion) >= 3){
		if (navigator.appName == "Netscape" && parseInt(navigator.appVersion)<5){
			var tools = new Packages.java.awt.Toolkit.getDefaultToolkit();
			screen=tools.getScreenSize();
		}
		x = screen.width;
		y = screen.height;
	}
	window.open(name,winname,"top=" + (y-h)/2 + ",left=" + (x-w)/2 + ",width="+w+",height="+h+",scrollbars="+scbar);
}


function show_son(ob){
   if (ob.style.display=="none") {
      ob.style.display="block"
   }else{
      ob.style.display="none"
   }
}

function show1(ob){

      ob.style.display="block"


}
function hide1(ob){

      ob.style.display="none"


}