function obliczWiek(form){
    var Dzis = new Date()
    var Rok = Dzis.getYear()
	
    if(Rok <= 99)
        Rok += 1900
	if(Rok >=100 && Rok<=1000)
		Rok+=1900

	return(Rok-form.lstRok.value);
 }

function obliczBMI(form){
	if (form.txtWzrost.value!=0)
		return(Math.round(form.txtWaga.value/(form.txtWzrost.value*form.txtWzrost.value*0.0001)*100)*0.01);
	else
		return 0;
}

function pokazWykresDuzy (URL)
		{
			w = 790;
			h = 510;
			imgwindow = window.open(URL,"imgwindow"," scrollbars=no, toolbar=no, fullscreen=no, resizable=yes,width="+w+",height="+h);
			imgwindow.focus();
		}

function pokazStatystyke (URL)
		{
			w = 500;
			h = 300;
			imgwindow = window.open(URL,"imgwindow"," scrollbars=no, toolbar=no, fullscreen=no, resizable=yes,width="+w+",height="+h);
			imgwindow.focus();
		}

function pokazOknoMailRaport (URL)
		{
			w = 500;
			h = 300;
			imgwindow = window.open(URL,"imgwindow"," scrollbars=no, toolbar=no, fullscreen=no, resizable=yes,width="+w+",height="+h);
			imgwindow.focus();
		}