function cha(id,img,typ){
				switch(typ){
					case 'ove':
						document.getElementById(id).src = "../img/"+img+".jpg";
						break;
					case 'out':
						document.getElementById(id).src = "../img/"+img+".jpg";
						break;
				}
			}
			
			function expand(row){
				colapse();
				document.getElementById('img_'+row).src = "../img/e_node.gif";
				document.getElementById('child_'+row).style.display = "block";
				
				//open(row+'.html','_self');
			}
			
			function colapse(){
				document.getElementById('img_onas').src = "../img/c_node.gif";
				document.getElementById('img_prod').src = "../img/c_node.gif";
				//document.getElementById('img_aktu').src = "../img/c_node.gif";
				document.getElementById('img_vyskum').src = "../img/c_node.gif";
				document.getElementById('img_kvalita').src = "../img/c_node.gif";
				document.getElementById('img_predaj').src = "../img/c_node.gif";
				
				document.getElementById('child_onas').style.display = "none";
				document.getElementById('child_prod').style.display = "none";
				//document.getElementById('child_aktu').style.display = "none";
				document.getElementById('child_vyskum').style.display = "none";
				document.getElementById('child_kvalita').style.display = "none";
				document.getElementById('child_predaj').style.display = "none";
			}