function steps2(chk)
{
	if(chk==1)
	{
		document.getElementById("step2_1").style.display = '';
		document.getElementById("step2_2").style.display = 'none';
		document.getElementById("step2_3").style.display = 'none';
		
		document.getElementById("mid2_img_1").src = 'images/mid2_tab1_on.gif';
		document.getElementById("mid2_img_2").src = 'images/mid2_tab2_off.gif';
		document.getElementById("mid2_img_3").src = 'images/mid2_tab3_off.gif';
	}
	else if(chk==2)
	{
		document.getElementById("step2_1").style.display = 'none';
		document.getElementById("step2_2").style.display = '';
		document.getElementById("step2_3").style.display = 'none';
		
		document.getElementById("mid2_img_1").src = 'images/mid2_tab1_off.gif';
		document.getElementById("mid2_img_2").src = 'images/mid2_tab2_on.gif';
		document.getElementById("mid2_img_3").src = 'images/mid2_tab3_off.gif';
	}
	else if(chk==3)
	{
		document.getElementById("step2_1").style.display = 'none';
		document.getElementById("step2_2").style.display = 'none';
		document.getElementById("step2_3").style.display = '';
		
		document.getElementById("mid2_img_1").src = 'images/mid2_tab1_off.gif';
		document.getElementById("mid2_img_2").src = 'images/mid2_tab2_off.gif';
		document.getElementById("mid2_img_3").src = 'images/mid2_tab3_on.gif';
	}
 
}