// JavaScript Document
$ = function(el){
	return document.getElementById(el);
}
function qh_check(teacher_type){
   if(teacher_type==1){
		$("qh_title1").className = "teacher_on";
		$("qh_title2").className = "teacher_off";
		$("qh_title3").className = "teacher_off";
		$("qh_title4").className = "teacher_off";
		$("qh_title5").className = "teacher_off";
				
		$("qh_cont1").style.display = "block";
		$("qh_cont2").style.display = "none";
		$("qh_cont3").style.display = "none";
		$("qh_cont4").style.display = "none";
		$("qh_cont5").style.display = "none";
	}else if(teacher_type==2){
		$("qh_title1").className = "teacher_off";
		$("qh_title2").className = "teacher_on";
		$("qh_title3").className = "teacher_off";
		$("qh_title4").className = "teacher_off";
		$("qh_title5").className = "teacher_off";
						
		$("qh_cont1").style.display = "none";
		$("qh_cont2").style.display = "block";
		$("qh_cont3").style.display = "none";
		$("qh_cont4").style.display = "none";
		$("qh_cont5").style.display = "none";
	}else if(teacher_type==3){
		$("qh_title1").className = "teacher_off";
		$("qh_title2").className = "teacher_off";
		$("qh_title3").className = "teacher_on";
		$("qh_title4").className = "teacher_off"
		$("qh_title5").className = "teacher_off"
				
		$("qh_cont1").style.display = "none";
		$("qh_cont2").style.display = "none";
		$("qh_cont3").style.display = "block";
		$("qh_cont4").style.display = "none";
		$("qh_cont5").style.display = "none";
	
		}else if(teacher_type==4){
		$("qh_title1").className = "teacher_off";
		$("qh_title2").className = "teacher_off";
		$("qh_title3").className = "teacher_off";
		$("qh_title4").className = "teacher_on"
		$("qh_title5").className = "teacher_off"
				
		$("qh_cont1").style.display = "none";
		$("qh_cont2").style.display = "none";
		$("qh_cont3").style.display = "none";
		$("qh_cont4").style.display = "block";
		$("qh_cont5").style.display = "none";
	    }else if(teacher_type==5){
		$("qh_title1").className = "teacher_off";
		$("qh_title2").className = "teacher_off";
		$("qh_title3").className = "teacher_off";
		$("qh_title4").className = "teacher_off"
		$("qh_title5").className = "teacher_on"
				
		$("qh_cont1").style.display = "none";
		$("qh_cont2").style.display = "none";
		$("qh_cont3").style.display = "none";
		$("qh_cont4").style.display = "none";
		$("qh_cont5").style.display = "block";
   }
	
}
function build_qh(el){
	var current = 1;
	var runing = function(){
		if(current%5 == 1){
			$("qh_title1").className = "teacher_on";
			$("qh_title2").className = "teacher_off";
			$("qh_title3").className = "teacher_off";
			$("qh_title4").className = "teacher_off";
			$("qh_title5").className = "teacher_off";
			
			$("qh_cont1").style.display = "block";
			$("qh_cont2").style.display = "none";
			$("qh_cont3").style.display = "none";
			$("qh_cont4").style.display = "none";
			$("qh_cont5").style.display = "none";
		}else if(current%5 == 2){
			$("qh_title1").className = "teacher_off";
			$("qh_title2").className = "teacher_on";
			$("qh_title3").className = "teacher_off";
			$("qh_title4").className = "teacher_off";
			$("qh_title5").className = "teacher_off";
			
			$("qh_cont1").style.display = "none";
			$("qh_cont2").style.display = "block";
			$("qh_cont3").style.display = "none";
			$("qh_cont4").style.display = "none"
			$("qh_cont5").style.display = "none"	
		}else if(current%5 == 3){
			$("qh_title1").className = "teacher_off";
			$("qh_title2").className = "teacher_off";
			$("qh_title3").className = "teacher_on";
			$("qh_title4").className = "teacher_off";
			$("qh_title5").className = "teacher_off";
			
			$("qh_cont1").style.display = "none";
			$("qh_cont2").style.display = "none";
			$("qh_cont3").style.display = "block";
			$("qh_cont4").style.display = "none";
			$("qh_cont5").style.display = "none";
		}else if(current%5 == 4){
			$("qh_title1").className = "teacher_off";
			$("qh_title2").className = "teacher_off";
			$("qh_title3").className = "teacher_off";
			$("qh_title4").className = "teacher_on";
			$("qh_title5").className = "teacher_off";
			
			$("qh_cont1").style.display = "none";
			$("qh_cont2").style.display = "none";
			$("qh_cont3").style.display = "none";
			$("qh_cont4").style.display = "block";
			$("qh_cont5").style.display = "none";
		}else if(current%5 == 0){
			$("qh_title1").className = "teacher_off";
			$("qh_title2").className = "teacher_off";
			$("qh_title3").className = "teacher_off";
			$("qh_title4").className = "teacher_off";
			$("qh_title5").className = "teacher_on";
			
			$("qh_cont1").style.display = "none";
			$("qh_cont2").style.display = "none";
			$("qh_cont3").style.display = "none";
			$("qh_cont4").style.display = "none";
			$("qh_cont5").style.display = "block";
		}
		current++;
	}
	
	var runing_time = setInterval(runing,5000);
	
	$("top_left_qh").onmouseover = function(){
		clearInterval(runing_time);
	}
	$("top_left_qh").onmouseout = function(){
		runing_time = setInterval(runing,5000);
	}
}