function show_full_desc() {
	var obj= document.getElementById('product_decription');
	obj.style.height = 'auto';
	document.getElementById('btn_show_full').style.display = 'none';
	document.getElementById('view_product_second_cart').style.display = 'inline';
	//obj.style.overflow = 'auto'; 
}
function hide_full_desc() {
	var obj = document.getElementById('product_decription');
	if (obj!=null) {
		if (obj.offsetHeight>350) {
			obj.style.height = 350+'px';
			document.getElementById('view_product_second_cart').style.display = 'none';
		}
		else {
			document.getElementById('btn_show_full').style.display = 'none';
			document.getElementById('view_product_second_cart').style.display = 'none';
		}
	}
}