var win= null;
function NewWindow(mypage,myname,w,h,scroll) {
	var winl = (screen.width-w)/2;
  	var wint = (screen.height-h)/2;
	var settings  ="height="+h+",";
	settings +="width="+w+",";
	settings +="top="+wint+",";
	settings +="left="+winl+",";
	settings +="scrollbars="+scroll+",";
	settings +="resizable=no";
	win=window.open(mypage,myname,settings);
	if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}

function csakSzamok(mibe){
	x=mibe.value;
	ki="";
		for(i=0;i<x.length;i++){
		   if (x.substr(i,1)>='0' && x.substr(i,1)<='9'){
			  ki+=x.substr(i,1);
			 }
			}
	mibe.value=ki;
}

function kivevePont(mibe){
	x=mibe.value;
	ki="";
		for(i=0;i<x.length;i++){
		   if (x.substr(i,1) != '.'){
			  ki+=x.substr(i,1);
			 }
			}
	mibe.value=ki;
}