function show(num)
		  {
				var trArr=new Array('tp1','tp2','tp3','tp4','tp5','tp6','tp7');
				var divArr=new Array('con_one_1','con_one_2','con_one_3','con_one_4','con_one_5','con_one_6','con_one_7');
				//var tp1=new Array('images/bg_menu2.gif','images/bg_menu1.jpg');
				//var tp2=new Array('images/bg_menu2.gif','images/bg_menu1.jpg');
				for(i=0;i<7;i++)
				{
					if(i==num)
					{
						eval("document.getElementById(trArr[i]).style.backgroundImage='url(images/arrow_3.gif)';");
						eval("document.getElementById(divArr[i]).style.display='block';");
						eval("document.getElementById(trArr[i]).className='on';");
					}
					else
					{
						//alert(document.getElementById(trArr[i]).style.backgroundImage);
						eval("document.getElementById(trArr[i]).style.backgroundImage='url()';");
						eval("document.getElementById(divArr[i]).style.display='none'");
						eval("document.getElementById(trArr[i]).className='li';");
					}
				}
		  }