function on_load(){ 
	display("glowna", "p1"); 
} 
 
function display(file, _pod){
	var datafile = window.location.href.substring(0,      
		window.location.href.lastIndexOf("/") + 1) +      
		"pliki/"+file+".inc";
 	if (document.all){
   		p = new ActiveXObject("Microsoft.XMLHTTP");
 	} 
 	else {
   		p = new XMLHttpRequest();
 	} 
 	p.open("GET",datafile,false);
        p.send(null); 
  	document.getElementById("main").innerHTML = p.responseText;

	for ( i=1 ; i<=5 ; i = i+1 ) { 
		var pod = document.getElementById("p"+i);
		pod.innerHTML="";
	}
	var pod=document.getElementById(_pod); 
	pod.innerHTML='<img src="obrazki/przerwa.jpg" class="img_przerwa" alt="" />';	  
}
 
function changeButton(img,imgOnMouse) {
	document.images[img].src = imgOnMouse.src
}