function show(num)
		  {
				var trArr=new Array('tp1','tp2','tp3','tp4','tp5','tp6');
				var divArr=new Array('con_one_1','con_one_2','con_one_3','con_one_4','con_one_5','con_one_6');
				var tp1=new Array('images/nav_index01.jpg','images/nav_index02.jpg','images/nav_index03.jpg','images/nav_index04.jpg','images/nav_index05.jpg','images/nav_index06.jpg');
				var tp2=new Array('images/nav_index1.jpg','images/nav_index2.jpg','images/nav_index3.jpg','images/nav_index4.jpg','images/nav_index5.jpg','images/nav_index6.jpg');
				for(i=0;i<6;i++)
				{
					if(i==num)
					{
						eval("document.getElementById(trArr[i]).src=tp1[i];");
						eval("document.getElementById(divArr[i]).style.display='block';");
					}
					else
					{
						eval("document.getElementById(trArr[i]).src=tp2[i];");
						eval("document.getElementById(divArr[i]).style.display='none';");
					}
				}
		  }