// JavaScript Document

	function showcontent(v)
	{
	
		if(v=='gc1')
		{
		 document.getElementById('gc1').style.display="block";
		 document.getElementById('gc2').style.display="none";
		 document.getElementById('gc3').style.display="none";
		 document.getElementById('gc4').style.display="none";
		 document.getElementById('link1').className = 'current';		 
		 document.getElementById('link2').className = '';
		 document.getElementById('link3').className = '';
		 document.getElementById('link4').className = '';
		 
		}
		else if(v=='gc3')
		{
		 document.getElementById('gc3').style.display="block";
		 document.getElementById('gc1').style.display="none";
		 document.getElementById('gc2').style.display="none";
		 document.getElementById('gc4').style.display="none";
		 document.getElementById('link3').className = 'current';
		 document.getElementById('link4').className = '';
		 document.getElementById('link2').className = '';
		 document.getElementById('link1').className = '';
		}
		else if(v=='gc4')
		{
		 document.getElementById('gc4').style.display ='block';
		 document.getElementById('gc1').style.display="none";
		 document.getElementById('gc2').style.display="none";
		 document.getElementById('gc3').style.display="none";
		 document.getElementById('link4').className = 'current';
		 document.getElementById('link3').className = '';
		 document.getElementById('link2').className = '';
		 document.getElementById('link1').className = '';
		}
		
		else
		{
		 document.getElementById('gc2').style.display="block";
		 document.getElementById('gc3').style.display="none";
		 document.getElementById('gc1').style.display="none";
		 document.getElementById('gc4').style.display="none";
		 document.getElementById('link2').className = 'current';
		 document.getElementById('link4').className = '';
		 document.getElementById('link1').className = '';
		 document.getElementById('link3').className = '';
		}
	}