// Seating Distance Calculator (Rev 4) designed by eMathLab.com - copyright HTmart.com

<!--
function setScrn(){
document.getElementById('diag').value=110;
document.getElementById('wide').value=96;
document.getElementById('high').value=54;
document.getElementById('space').value=48;

document.getElementById('diag0').value=110;
document.getElementById('wide0').value=96;
document.getElementById('high0').value=54;
document.getElementById('space0').value=48;

document.getElementById('diagR').style.color = "gray";
document.getElementById('wideR').style.color = "gray";
document.getElementById('highR').style.color = "gray";
document.getElementById('spaceR').style.color = "gray";

document.getElementById('diag').select();
}
function seatMe(dim){

if(isNaN(document.getElementById('diag').value)){document.getElementById('diagR').style.color = "red"; document.getElementById('diag').value = diag0.value; document.getElementById('diag').select(); return;}

if(isNaN(document.getElementById('wide').value)){document.getElementById('wideR').style.color = "red";  document.getElementById('wide').value = wide0.value; document.getElementById('wide').select(); return;}

if(isNaN(document.getElementById('high').value)){document.getElementById('highR').style.color = "red"; document.getElementById('high').value = high0.value; document.getElementById('high').select(); return;}

if(isNaN(document.getElementById('space').value)){document.getElementById('spaceR').style.color = "red";  document.getElementById('space').value = space0.value; document.getElementById('space').select(); return;}

if(dim==1){document.getElementById('wide').value=Math.round(document.getElementById('diag').value/1.147); document.getElementById('high').value=Math.round(9/16*document.getElementById('wide').value);}

if(dim==2){document.getElementById('diag').value=Math.round(1.147*document.getElementById('wide').value); document.getElementById('high').value=Math.round(9/16*document.getElementById('wide').value);}

if(dim==3){document.getElementById('wide').value=Math.round(16/9*document.getElementById('high').value); document.getElementById('diag').value=Math.round(1.147*document.getElementById('wide').value);}

document.getElementById('seating').src='HT_calcs/seatCalcR4.php?scrn=' + document.getElementById('wide').value + '&spc=' + document.getElementById('space').value;

document.getElementById('diag0').value=document.getElementById('diag').value;
document.getElementById('wide0').value=document.getElementById('wide').value;
document.getElementById('high0').value=document.getElementById('high').value;
document.getElementById('space0').value=document.getElementById('space').value;

if(dim==1){document.getElementById('diag').select();}
if(dim==2){document.getElementById('wide').select();}
if(dim==3){document.getElementById('high').select();}
if(dim==4){document.getElementById('space').select();}
}

function chkKey(i){

document.getElementById('diagR').style.color = "gray";
document.getElementById('wideR').style.color = "gray";
document.getElementById('highR').style.color = "gray";
document.getElementById('spaceR').style.color = "gray";

var key;
if(i && i.which){i = i; key = i.which;} // Chk N4+
else{i = event; key = i.keyCode;}

if(key==13){
		size();
	}
}

function size(){

if(document.getElementById('diag').value <40 || document.getElementById('diag').value > 241){document.getElementById('diagR').style.color = "red"; document.getElementById('diag').value = diag0.value; document.getElementById('diag').select(); return;}

else if(document.getElementById('wide').value < 35 || document.getElementById('wide').value > 210){document.getElementById('wideR').style.color = "red";  document.getElementById('wide').value = wide0.value; document.getElementById('wide').select(); return;}

else if(document.getElementById('high').value < 20 || document.getElementById('high').value > 118){document.getElementById('highR').style.color = "red"; document.getElementById('high').value = high0.value; document.getElementById('high').select(); return;}

else if(document.getElementById('space').value < 36 || document.getElementById('space').value > 72){document.getElementById('spaceR').style.color = "red";  document.getElementById('space').value = space0.value; document.getElementById('space').select(); return;}

else{if(document.getElementById('diag').value != document.getElementById('diag0').value){seatMe(1);}
		else if(document.getElementById('wide').value != document.getElementById('wide0').value){seatMe(2);}
			else if(document.getElementById('high').value != document.getElementById('high0').value){seatMe(3);}
				else if(document.getElementById('space').value != document.getElementById('space0').value){seatMe(4);}
	}
}

//-->