function chgsolutions(e){

	menuname=e.id;
	len=menuname.length;
	menunum=menuname.substring(len-1,len);
	//tabchange
	$("tabimg").src="images/tab"+menunum+".gif";
	new Effect.Fade("solution",{duration:0.3});
	setTimeout('chghtml('+menunum+')',300);
}

function chghtml(menunum){

	for (i=1;i<8;i=i+1){
			$("solution"+i).style.display="none";
	}
	$("solution"+menunum).style.display="block";
	bdown();

/*	new Ajax.Request("solutions.php", {
		method: "post",
		parameters : "num="+menunum,
		onComplete : function(httpObj){
//		onSuccess: function(httpObj){
				$("solution").innerHTML = httpObj.responseText;
				bdown();
				},
		onFailure : function(){
			alert("fail");
			}
	});*/
}

function bdown(){
//	new Effect.BlindDown("solution",{duration:0.4});
	new Effect.Appear("solution",{duration:0.3});
}