var df =new Array(0,0.004,0.008,0.012,0.016,0.0199,0.0239,0.0279,0.0319,0.0359,
		0.0398,0.0438,0.0478,0.0517,0.0557,0.0596,0.0636,0.0675,0.0714,0.0753,
		0.0793,0.0832,0.0871,0.091,0.0948,0.0987,0.1026,0.1064,0.1103,0.1141,
		0.1179,0.1217,0.1255,0.1293,0.1331,0.1368,0.1406,0.1443,0.148,0.1517,
		0.1554,0.1591,0.1628,0.1664,0.17,0.1736,0.1772,0.1808,0.1844,0.1879,
		0.1915,0.195,0.1985,0.2019,0.2054,0.2088,0.2123,0.2157,0.219,0.2224,
		0.2257,0.2291,0.2324,0.2357,0.2389,0.2422,0.2454,0.2486,0.2517,0.2549,
		0.258,0.2611,0.2642,0.2673,0.2704,0.2734,0.2764,0.2794,0.2823,0.2852,
		0.2881,0.291,0.2939,0.2967,0.2995,0.3023,0.3051,0.3078,0.3106,0.3133,
		0.3159,0.3186,0.3212,0.3238,0.3264,0.3289,0.3315,0.334,0.3365,0.3389,
		0.3413,0.3438,0.3461,0.3485,0.3508,0.3531,0.3554,0.3577,0.3599,0.3621,
		0.3643,0.3665,0.3686,0.3708,0.3729,0.3749,0.377,0.379,0.381,0.383,
		0.3849,0.3869,0.3888,0.3907,0.3925,0.3944,0.3962,0.398,0.3997,0.4015,
		0.4032,0.4049,0.4066,0.4082,0.4099,0.4115,0.4131,0.4147,0.4162,0.4177,
		0.4192,0.4207,0.4222,0.4236,0.4251,0.4265,0.4279,0.4292,0.4306,0.4319,
		0.4332,0.4345,0.4357,0.437,0.4382,0.4394,0.4406,0.4418,0.4429,0.4441,
		0.4452,0.4463,0.4474,0.4484,0.4495,0.4505,0.4515,0.4525,0.4535,0.4545,
		0.4554,0.4564,0.4573,0.4582,0.4591,0.4599,0.4608,0.4616,0.4625,0.4633,
		0.4641,0.4649,0.4656,0.4664,0.4671,0.4678,0.4686,0.4693,0.4699,0.4706,
		0.4713,0.4719,0.4726,0.4732,0.4738,0.4744,0.475,0.4756,0.4761,0.4767,
		0.4772,0.4778,0.4783,0.4788,0.4793,0.4798,0.4803,0.4808,0.4812,0.4817,
		0.4821,0.4826,0.483,0.4834,0.4838,0.4842,0.4846,0.485,0.4854,0.4857,
		0.4861,0.4864,0.4868,0.4871,0.4875,0.4878,0.4881,0.4884,0.4887,0.489,
		0.4893,0.4896,0.4898,0.4901,0.4904,0.4906,0.4909,0.4911,0.4913,0.4916,
		0.4918,0.492,0.4922,0.4925,0.4927,0.4929,0.4931,0.4932,0.4934,0.4936,
		0.4938,0.494,0.4941,0.4943,0.4945,0.4946,0.4948,0.4949,0.4951,0.4952,
		0.4953,0.4955,0.4956,0.4957,0.4959,0.496,0.4961,0.4962,0.4963,0.4964,
		0.4965,0.4966,0.4967,0.4968,0.4969,0.497,0.4971,0.4972,0.4973,0.4974,
		0.4974,0.4975,0.4976,0.4977,0.4977,0.4978,0.4979,0.4979,0.498,0.4981,
		0.4981,0.4982,0.4982,0.4983,0.4984,0.4984,0.4985,0.4985,0.4986,0.4986,
		0.4987,0.4987,0.4987,0.4988,0.4988,0.4989,0.4989,0.4989,0.499,0.499,
		0.499,0.4991,0.4991,0.4991,0.4992,0.4992,0.4992,0.4992,0.4993,0.4993,
		0.4993,0.4993,0.4994,0.4994,0.4994,0.4994,0.4994,0.4995,0.4995,0.4995,
		0.4995,0.4995,0.4995,0.4996,0.4996,0.4996,0.4996,0.4996,0.4996,0.4997,
		0.4997,0.4997,0.4997,0.4997,0.4997,0.4997,0.4997,0.4997,0.4997,0.4998);

function check(ad)
{
	var ch=ad.value;
	if(isNaN(ch))
	{
		var df=ch.substring(0,(ch.length-1))
		ad.value=df;
	}	
}

function belowval(mean,sd,val){
	var below = 0;

	if(val<mean)
	{		
		var y=mean-val;
		var z=y/sd;
		var ff = z/.01;
		below=Math.round((0.5-df[ff])*10000)/10000;
	}
	else if(val == mean)
	{
		below=0.5;
	}
	else if(val > mean)
	{
		var y=val-mean;
		var z=y/sd;
		var gg = z/.01;
		below=Math.round((0.5+df[gg])*10000)/10000;
	}
	
	return below;
}


function be()
{
	
	var a=document.nor.m.value;
	var b=document.nor.s.value;
	var c=document.nor.aa.value;
	
	var fff = belowval(a,b,c);
	document.nor.res.value = fff;
	
}

function ab()
{
	var a=document.nor.m.value;
	var b=document.nor.s.value;
	var d=document.nor.bb.value;
	

	var ggg = 1-belowval(a,b,d);
	document.nor.res.value = Math.round(ggg*10000)/10000;
	
}

function bet()
{	

	var a=document.nor.m.value;
	var b=document.nor.s.value;
	var e=document.nor.cc.value;
	var f=document.nor.dd.value;
	
	if(e>a && f>a)
	{
		var hhh=belowval(a,b,e);
		var iii=belowval(a,b,f);
		var w=hhh-iii;
		document.nor.res.value = Math.round(w*10000)/10000;
	}
	else if(e<a && f<a)
	{
		var jjj=belowval(a,b,e);
		var kkk=belowval(a,b,f);
		var x=jjj-kkk;
		document.nor.res.value = Math.round(x*10000)/10000;
	}		
	else if(e>a && f<a)
	{
		var lll=belowval(a,b,e);
		var mmm=belowval(a,b,f);
		var y=lll-mmm;
		document.nor.res.value = Math.round(y*10000)/10000;
	}	
	else if(e<a && f>a)
	{
		var nnn=belowval(a,b,e);
		var ppp=belowval(a,b,f);
		var z=ppp-nnn;
		document.nor.res.value = Math.round(z*10000)/10000;
	}			
}