var x;
x = 0;

function ReklamaPravyPruh()
	{
		var poleReklama = new Array;
		var nahodneCislo, preload_image_object;
		var divReklamaRight, image_url;
		var reklamaTxt, n, i, target;
		
		reklamaTxt = "";
		i = 0
		n = 1;
		n--;
		
		if(document.images)
			{				
				preload_image_object = new Image();
		
				image_url = new Array();				
				
				image_url[0] = "upload/prilohy/1093.gif";

		
				for(i = 0; i <= n; i++) 
					preload_image_object.src = image_url[i];
			}
		
		poleReklama[0] = new Array("<img src='upload/prilohy/1093.gif' alt='' width='112' height='74' />", "http://www.trest.cz/default.asp?ID=78&Lang=cz&kod=Pozemky", "False");

		
		//nahodneCislo = Math.floor(Math.random() * (n+1));
		x++;
		
		if(x > n)
			x = 0;
		
		nahodneCislo = x;	
		
		if(poleReklama[nahodneCislo][2] == 'False')
			target = "";
		else
			target = " target='_blank'";
		
		reklamaTxt = "<a href='"+ poleReklama[nahodneCislo][1] +"'"+ target +">"+ poleReklama[nahodneCislo][0] +"</a>";
		document.getElementById("reklamaPravaStrana").innerHTML = reklamaTxt;
	}

window.setInterval(ReklamaPravyPruh, 4000);
ReklamaPravyPruh();