function tab_display(i){
   	if(i == 0){
	   document.getElementById("tab_l2").style.display = 'block';
	   document.getElementById("pro_hot").style.display = 'block';
	   document.getElementById("tab_l1").style.display = 'none';
	   document.getElementById("pro_new").style.display = 'none';
	}
	else{
	   document.getElementById("tab_l2").style.display = 'none';
	   document.getElementById("pro_hot").style.display = 'none';
	   document.getElementById("tab_l1").style.display = 'block';
	   document.getElementById("pro_new").style.display = 'block';	   
	}
}

function show_big_img(current,target){
	current.href = document.getElementById(target).src;
	}