function cursor(){document.dbs.Z.focus()}
function getValues(){if(isNaN(document.dbs.V.value)){alert("Enter number for Voltage.")
document.dbs.V.focus()
document.dbs.V.select()
return false}
if(isNaN(document.dbs.Z.value)){alert("Enter number for Impedance.")
document.dbs.Z.focus()
document.dbs.Z.select()
return false}
if(isNaN(document.dbs.dbm.value)){alert("Enter number for dbm.")
document.dbs.dbm.focus()
document.dbs.dbm.select()
return false}
if(isNaN(document.dbs.W.value)){alert("Enter number for dbm / V.")
document.dbs.V.focus()
document.dbs.V.select()
return false}
Z=parseFloat(document.dbs.Z.value)
W=parseFloat(document.dbs.W.value)
V=parseFloat(document.dbs.V.value)
dbm=parseFloat(document.dbs.dbm.value)
var W1=0
if(dbm<-89&&dbm>200){dbm=0}
if(document.dbs.dbm.value==""&&document.dbs.Z.value!=""&&document.dbs.V.value!=""){dbm=10*(Math.log((Math.pow(V,2)*1000)/Z))/Math.log(10)
document.dbs.dbm.value=Math.round(dbm*1000000000000)/1000000000000
return false}
if(document.dbs.V.value==""&&document.dbs.Z.value!=""&&document.dbs.dbm.value!=""){V=Math.sqrt((Z*(Math.pow(10,(dbm/10))))/1000)
document.dbs.V.value=Math.round(V*1000000)/1000000
return false}
if(document.dbs.Z.value==""&&document.dbs.V.value!=""&&document.dbs.dbm.value!=""){Z=(1000*Math.pow(V,2))/Math.pow(10,(dbm/10))
document.dbs.Z.value=Math.round(Z*1000)/1000
return false}
W=(Math.pow(10,(dbm/10))/1000)
if(W>0.000000000001){document.getElementById('wts').innerHTML="pico-Watts";W1=W*1000000000000}
if(W>0.000000001){document.getElementById('wts').innerHTML="nano-Watts";W1=W*1000000000}
if(W>0.000001){document.getElementById('wts').innerHTML="micro-Watts";W1=W*1000000}
if(W>0.001){document.getElementById('wts').innerHTML="milli-Watts";W1=W*1000}
if(W>1){document.getElementById('wts').innerHTML="Watts";W1=W*1}
if(W>1000){document.getElementById('wts').innerHTML="kilo-Watts";W1=W/1000}
if(W>1000000){document.getElementById('wts').innerHTML="mega-Watts";W1=W/1000000}
if(W>1000000000){document.getElementById('wts').innerHTML="giga-Watts";W1=W/1000000000}
if(W>1000000000000){document.getElementById('wts').innerHTML="tera-Watts";W1=W/1000000000000}
document.dbs.W.value=Math.round(W1*1000000)/1000000
return false}
function resetV(){document.dbs.V.value=""
document.dbs.V.focus()
document.dbs.V.select()}
function resetW(){document.dbs.W.value=""
document.dbs.W.focus()
document.dbs.W.select()}
function resetZ(){document.dbs.Z.value=""
document.dbs.Z.focus()
document.dbs.Z.select()}
function resetdbm(){document.dbs.dbm.value=""
document.dbs.dbm.focus()
document.dbs.dbm.select()}
function DefaultAll(){document.dbs.V.value=""
document.dbs.W.value=""
document.dbs.dbm.value="0"
document.dbs.Z.value="50"
document.dbs.Z.focus()
document.dbs.V.select()
document.getElementById('wts').innerHTML="";}