function ChangeTab(no,totaltabs)
{
	
	
	var j;
	var k;
	var i;
	for (i=1; i<=totaltabs; i++) /* increase the iteration when tabs are increased*/
	{
		if(i == no)
		{
			j = "tab"+no
			k = "tabcontent"+no;
			document.getElementById(j).className="tabOn";
			document.getElementById(k).style.display="block"
			if(i == no && i == 1)
			{
				j = "tab"+i
				k = "tabcontent"+i;
				document.getElementById(j).className="tabfirstOn";
				document.getElementById(k).style.display="block";
			}
		}
		
		else if(i != no && i == 1)
		{
			j = "tab"+i
			k = "tabcontent"+i;
			document.getElementById(j).className="tabfirstOff";
			document.getElementById(k).style.display="none";
		}
		else
		{
			j = "tab"+i
			k = "tabcontent"+i;
			document.getElementById(j).className="tabOff";
			document.getElementById(k).style.display="none";
		}
	}
}