var RAD=Math.PI/180,fillLevel,tankHeight,isFilling=false;function Setup(){RestoreFromQs();Calculate();SetInput()}
function Calculate(){var a=document.getElementById("txtFill");fillLevel=ParseCheck("Fill Level",a,1,1E6);if(!(fillLevel<0)){a=document.getElementById("txtHeight");tankHeight=ParseCheck("Height",a,1,1E6);if(!(tankHeight<0))if(fillLevel>tankHeight)alert("Fill Level must be = < Tank Height");else{a=document.getElementById("txtBaseWidth");var c=ParseCheck("Base Width",a,1,1E6);a=document.getElementById("txtBaseLength");var b=ParseCheck("Base Length",a,1,1E6);a=tankHeight/fillLevel;var l=c/tankHeight;
c=b*c;b=c*tankHeight*1.0E-6;var g=c*fillLevel*1.0E-6;document.getElementById("spnResults").innerHTML="Total Fill = "+RoundTo(b,2)+" ltrs<br />Filled to "+fillLevel+" = "+RoundTo(g,2)+" ltrs";b=document.getElementById("tblDipstick");if(g=document.getElementById("cbDipstick").checked){var d,e;d=b.childNodes.length;for(var f=1;f<d;f++)b.removeChild(b.childNodes[1]);var j=0,k=parseFloat(document.getElementById("ddDipstickIncs").value),h=tankHeight/k;if(h>150)h=150;var i=0;for(f=1;f<h;f++){i=f*k;j=c*i*
1.0E-6;d=document.createElement("tr");e=document.createElement("td");e.innerHTML=i+" __ ";d.appendChild(e);e=document.createElement("td");e.innerHTML=RoundTo(j,2);d.appendChild(e);b.appendChild(d)}b.style.display="block"}else b.style.display="none";DrawTank(l,a,g)}}}var fillTimer=null;
function Fill(a){if(isFilling)StopFill();else{fillTimer=setInterval("FillAuto("+a+")",10);isFilling=true;if(a==1)document.getElementById("imgUp").src="images/UpR.gif";else document.getElementById("imgDown").src="images/DownR.gif"}}function FillAuto(a){a=fillLevel+a;if(a>0&&a<tankHeight){document.getElementById("txtFill").value=a;Calculate()}else StopFill()}
function StopFill(){clearInterval(fillTimer);document.getElementById("imgUp").src="images/Up.gif";document.getElementById("imgDown").src="images/Down.gif";isFilling=false};