// JavaScript Document


function change(id){
  
		if(id=='tab_1')
		{
			document.getElementById('tab_1').className ='slect';
			document.getElementById('tab_2').className ='noslect';
			document.getElementById('big_pro_price').style.display="block";
			document.getElementById('tab_cnt_2').style.display="none";
				
		}
		
		if(id=='tab_2')
		{
			document.getElementById('tab_1').className ='noslect';
			document.getElementById('tab_2').className ='slect';
			document.getElementById('big_pro_price').style.display="none";
			document.getElementById('tab_cnt_2').style.display="block";	
		}
	}