function showTab(id)
	{
		c1 = document.getElementById("content1");
		c2 = document.getElementById("content2");
		c3 = document.getElementById("content3");
		c4 = document.getElementById("content4");
		c5 = document.getElementById("content5");
	    c6 = document.getElementById("content6");
		c7 = document.getElementById("content7");
	
		
		t1 = document.getElementById("tab1");
		t2 = document.getElementById("tab2");
		t3 = document.getElementById("tab3");
		t4 = document.getElementById("tab4");
		t5 = document.getElementById("tab5");
		t6 = document.getElementById("tab6");
		t7 = document.getElementById("tab7");
		
				
		
		if (c1 != null && c2 != null && c3 != null && c4 != null && c5 != null && c6 != null && c7 != null )
		{
			c1.style.display = "none";
			c2.style.display = "none";
			c3.style.display = "none";
			c4.style.display = "none";
			c5.style.display = "none";
		    c6.style.display = "none";
			c7.style.display = "none";
									
		}
		if(t1 != null && t2 != null && t3 != null && t4 != null && t5 != null && t6 != null && t7 != null  )
		{
			t1.className = "t1";
			t2.className = "t2";
			t3.className = "t2";
			t4.className = "t7";
			t5.className = "t7";
			t6.className = "t2";
			t7.className = "t2";
									
		}
		if (id==1){
		  document.getElementById("tab" + id).className = 't1_selected';	
		}
		else if (id==2 || id==3)
		{
		document.getElementById("tab" + id).className = 't2_selected';
		}
		else if (id==4){
		  document.getElementById("tab" + id).className = 't7_selected';	
		}
		else if (id==5){
		  document.getElementById("tab" + id).className = 't7_selected';	
		}
		else if (id==6){
		  document.getElementById("tab" + id).className = 't2_selected';	
		}
		else if (id==7){
		  document.getElementById("tab" + id).className = 't2_selected';	
		}
		
		document.getElementById("content" + id).style.display = 'block';			
	}