preImage10 = new Image();
preImage10.src = "img_check/10.gif";
preImage30 = new Image();
preImage30.src = "img_check/30.gif";
preImage60 = new Image();
preImage60.src = "img_check/60.gif";
preImage90 = new Image();
preImage90.src = "img_check/90.gif";

window.onload = init;
function init(){
	document.form1.btn.onclick = clickCheck;
}

function clickCheck(){

	// BMI計算のポイン計算
		//BMI計算
		KG = document.form1.kg.value;
		CM = document.form1.cm.value;
		var kotaeSisuu = (Math.floor((KG/((CM/100)*(CM/100)))*10))/10;
	var bmiPoint = 0;
	if(kotaeSisuu >= 25 && kotaeSisuu < 30){
		bmiPoint = 2;
	}
	if(kotaeSisuu >= 30){
		bmiPoint = 3;
	}


	
	//年齢のポイント計算
	if(document.form1.age.value >= 60){
		agePoint = 2;
	}else if(document.form1.age.value >= 40){
		agePoint = 1;
	}else {agePoint = 0};
		//alert(agePoint);
		
		
	//質問のポイント計算
	var count = 0;
	if(document.form1.che1.checked){
		count++;
	}
	if(document.form1.che2.checked){
		count++;
	}
	if(document.form1.che3.checked){
		count++;
	}
	if(document.form1.che4.checked){
		count++;
	}
	if(document.form1.che5.checked){
		count++;
	}
	if(document.form1.che6.checked){
		count++;
	}
	if(document.form1.che7.checked){
		count++;
	}
	if(document.form1.che8.checked){
		count++;
	}
	if(document.form1.che9.checked){
		count++;
	}
	if(document.form1.che10.checked){
		count++;
	}
	if(document.form1.che11.checked){
		count++;
	}
	if(document.form1.che12.checked){
		count++;
	}
	if(document.form1.che13.checked){
		count++;
	}
	if(document.form1.che14.checked){
		count++;
	}
	//alert(count);

	
	//評価
	gouKei = bmiPoint + agePoint + count;
	
	if(gouKei <= 2){
		hyouka = 10;
	}else if(gouKei <= 7){
		hyouka = 30;
	}else if(gouKei <= 14){
	 	hyouka = 60;
	}else if(gouKei > 15){
		hyouka = 90;
	}
	
	//alert(hyouka);
	document.form1.gazou.src = "img_check/" + hyouka + ".gif";
		
}

//リセット
function Reset(){
	document.form1.gazou.src = "img_check/00.gif";
}