// JavaScript Document
function change(num)
{
	for(i=0;i<4;i++)
	{
		document.getElementById("r3r_" + i).style.display = "none";
		document.getElementById("img" + i).className = "r3r_tc1";		
		}
		document.getElementById("r3r_" + num).style.display = "block";
		document.getElementById("img" + num).className = "r3r_tc";	
	}
function cg(num)
{
	for(i=0;i<6;i++)
	{
		document.getElementById("bt" + i).style.display = "none";
		document.getElementById("tp" + i).className = "sevc_top1";		
		}
		document.getElementById("bt" + num).style.display = "block";
		document.getElementById("tp" + num).className = "sevc_top2";	
	}
function chg(num)
{
	for(i=0;i<4;i++)
	{
		document.getElementById("bt" + i).style.display = "none";
		document.getElementById("tp" + i).className = "sevc_top1";		
		}
		document.getElementById("bt" + num).style.display = "block";
		document.getElementById("tp" + num).className = "sevc_top2";	
	}
function sub(num)
{
		for(i=0;i<27;i++)
		{
			document.getElementById("pro" + i).style.display = "none";
			}
			document.getElementById("pro" + num).style.display = "block";
	}
function suB(num)
{
	var s1 = document.getElementById("sub"+num).style.display ;
	if(s1 == "none")
	{
			for(i=1;i<3;i++)
			{
				document.getElementById("sub"+i).style.display="none";
				}
				document.getElementById("sub"+num).style.display = "block"; 
		}
	else{
		for(i=1;i<3;i++)
			{
				document.getElementById("sub"+i).style.display="none";
				}
		
		}
	}
function op(num,x)
{
	var s1 = document.getElementById("sub"+num).style.display ;
	if(s1 == "none")
	{
			for(i=1;i<x;i++)
			{
				document.getElementById("sub"+i).style.display="none";
				}
				document.getElementById("sub"+num).style.display = "block"; 
		}
	else{
		for(i=1;i<x;i++)
			{
				document.getElementById("sub"+i).style.display="none";
				}
		
		}
	}