var mywin = 0;  
 
function openWindow(url,koko) { 
	if(koko == 2){
		features="status=no,location=0,locationbar=0,toolbar=0,directories=0,status=0,menubar=0,resizable=0,scrollbars=1,fullscreen=0,left=100px,top=300px,width=800px,height=800px";
	}
	else{
		features="status=no,location=0,locationbar=0,toolbar=0,directories=0,status=0,menubar=0,resizable=0,scrollbars=1,fullscreen=0,left=100px,top=300px,width=360px,height=400px";
	}
	if(mywin==0||mywin.closed) {		
		mywin = window.open( url, "ikkuna", features );
           	mywin.focus();
	}		
      else {
       	mywin.location.href = url;
            mywin.focus();
   	}
}