var interval;
		
		function getCurent() {
			curent = 1;
			for(i=1; i<=maxprod; i++) {
				if(document.getElementById("tab"+i).style.display!="none") {
					curent = i;
					break;
				}
			}
			return curent;
		}
		
		function derulareProduse(timpref) {
			try {
				clearInterval(interval);
			} catch(e) {}
			interval = setInterval(function () { 
				curent = getCurent();
				
				for(i=1; i<=maxprod; i++) {
					document.getElementById("tab"+i).style.display="none"; 
					document.getElementById("tab"+i+"but").style.color = "#FF9900";
				}
				
				if(curent==maxprod) {
					document.getElementById("tab1").style.display="";
					document.getElementById("tab1but").style.color = "#ffffff";
				} else {
					next = curent+1;
					document.getElementById("tab"+next).style.display="";
					document.getElementById("tab"+next+"but").style.color = "#ffffff";
				}
			}, timpref)
		}
		
		function schimbaBack(tab) {
			
			if(document.getElementById("tab"+tab).style.display=="none")
				document.getElementById("tab"+tab+"but").style.color='#FF9900';
			else 
				document.getElementById("tab"+tab+"but").style.color='#ffffff';
		}
		
		function schimbaBut(tab) {
			clearInterval(interval);
			for(i=1; i<=maxprod; i++) {
				if(i==tab) {
					document.getElementById("tab"+i).style.display="";
					document.getElementById("tab"+i+"but").style.color = "#ffffff";
				} else { 
					document.getElementById("tab"+i).style.display="none";
					document.getElementById("tab"+i+"but").style.color = "#FF9900";
				}
			}
			
			setTimeout("derulareProduse(int)", 5000);
		}