function setTab(n){    
	 var tli=document.getElementById("menu1").getElementsByTagName("a");    
	 var mli=document.getElementById("About_content").getElementsByTagName("div");
	 var span=document.getElementById("About_content").getElementsByTagName("span");
	 for(i=0;i<tli.length;i++){    
	  tli[i].className=i==n?"About_menuHover":"";    
	  mli[i].className=i==n?"AboutTextblock":"none";   
	  span[i].style.display=i==n?"block":"none"; 
	 }    
}
 function setTabB(n){    
	 var tli=document.getElementById("menu2").getElementsByTagName("a");    
	 var mli=document.getElementById("main2").getElementsByTagName("li");    
	 for(i=0;i<tli.length;i++){    
	  tli[i].className=i==n?"hover2":"";    
	  //alert(mli[i].value);
	  mli[i].style.display=i==n?"block":"none";    
	 }    
} 
 function setTabC(n){    
	 var tli=document.getElementById("menu3").getElementsByTagName("a");    
	 var mli=document.getElementById("main3").getElementsByTagName("li");    
	 for(i=0;i<tli.length;i++){    
	  tli[i].className=i==n?"hover2":"";    
	  //alert(mli[i].value);
	  mli[i].style.display=i==n?"block":"none";    
	 }    
} 
 function setTabD(n){    
	 var tli=document.getElementById("menu4").getElementsByTagName("a");    
	 var mli=document.getElementById("main4").getElementsByTagName("li");    
	 for(i=0;i<tli.length;i++){    
	  tli[i].className=i==n?"hover2":"";    
	  //alert(mli[i].value);
	  mli[i].style.display=i==n?"block":"none";    
	 }    
} 

 function menu1(n){    
	var menu=document.getElementById("menu").getElementsByTagName("img");
	for(i=0;i<menu.length;i++){
		menu[i].src = 	'/images/MarketingPlanning/'+menu[i].id+'.jpg';
		document.getElementById(n).src = '/images/MarketingPlanning/1-'+n+'.jpg';
	}
}