function change(id){
	if(id=='nav_detail_a')
	{
	  
		document.getElementById('detail_1').style.display="block";
		document.getElementById('detail_2').style.display="none";
		document.getElementById('detail_3').style.display="none";
		document.getElementById('detail_4').style.display="none";
		document.getElementById('detail_5').style.display="none";
		document.getElementById('detail_6').style.display="none";
		
		document.getElementById('nav_detail_a').className ="bigmenu_sl";
		document.getElementById('nav_detail_b').className ="";
		document.getElementById('nav_detail_c').className ="";
		document.getElementById('nav_detail_d').className ="";
		document.getElementById('nav_detail_e').className ="";
		document.getElementById('nav_detail_f').className ="";		
	}

	
	
	if(id=='nav_detail_b')
	{
		document.getElementById('detail_1').style.display="none";
		document.getElementById('detail_2').style.display="block";
		document.getElementById('detail_3').style.display="none";
		document.getElementById('detail_4').style.display="none";
		document.getElementById('detail_5').style.display="none";
		document.getElementById('detail_6').style.display="none";
    		
		document.getElementById('nav_detail_a').className ="";
		document.getElementById('nav_detail_b').className ="bigmenu_sl";
		document.getElementById('nav_detail_c').className ="";
		document.getElementById('nav_detail_d').className ="";
		document.getElementById('nav_detail_e').className ="";
		document.getElementById('nav_detail_f').className ="";	

	}
	
	
	if(id=='nav_detail_c')
	{
		document.getElementById('detail_1').style.display="none";
		document.getElementById('detail_2').style.display="none";
		document.getElementById('detail_3').style.display="block";
		document.getElementById('detail_4').style.display="none";
		document.getElementById('detail_5').style.display="none";
		document.getElementById('detail_6').style.display="none";
		
		document.getElementById('nav_detail_a').className ="";
		document.getElementById('nav_detail_b').className ="";
		document.getElementById('nav_detail_c').className ="bigmenu_sl";
		document.getElementById('nav_detail_d').className ="";
		document.getElementById('nav_detail_e').className ="";
		document.getElementById('nav_detail_f').className ="";
		
	}
	
	
	if(id=='nav_detail_d')
	{
		document.getElementById('detail_1').style.display="none";
		document.getElementById('detail_2').style.display="none";
		document.getElementById('detail_3').style.display="none";
		document.getElementById('detail_4').style.display="block";
		document.getElementById('detail_5').style.display="none";
		document.getElementById('detail_6').style.display="none";		
	
		document.getElementById('nav_detail_a').className ="";
		document.getElementById('nav_detail_b').className ="";
		document.getElementById('nav_detail_c').className ="";
		document.getElementById('nav_detail_d').className ="bigmenu_sl";
		document.getElementById('nav_detail_e').className ="";
		document.getElementById('nav_detail_f').className ="";
	
	}
	
	if(id=='nav_detail_e')
	{
		document.getElementById('detail_1').style.display="none";
		document.getElementById('detail_2').style.display="none";
		document.getElementById('detail_3').style.display="none";
		document.getElementById('detail_4').style.display="none";
		document.getElementById('detail_5').style.display="block";
		document.getElementById('detail_6').style.display="none";
		
	
		document.getElementById('nav_detail_a').className ="";
		document.getElementById('nav_detail_b').className ="";
		document.getElementById('nav_detail_c').className ="";
		document.getElementById('nav_detail_d').className ="";
		document.getElementById('nav_detail_e').className ="bigmenu_sl";
		document.getElementById('nav_detail_f').className ="";

	
	}	
	
	if(id=='nav_detail_f')
	{
		document.getElementById('detail_1').style.display="none";
		document.getElementById('detail_2').style.display="none";
		document.getElementById('detail_3').style.display="none";
		document.getElementById('detail_4').style.display="none";
		document.getElementById('detail_5').style.display="none";
		document.getElementById('detail_6').style.display="block";		
	
		document.getElementById('nav_detail_a').className ="";
		document.getElementById('nav_detail_b').className ="";
		document.getElementById('nav_detail_c').className ="";
		document.getElementById('nav_detail_d').className ="";
		document.getElementById('nav_detail_e').className ="";
		document.getElementById('nav_detail_f').className ="bigmenu_sl";

	
	}
}