function changeImage( e, width, height ) {
  var srcE = ( e.target ? e.target : e.srcElement );
  var src = srcE.getAttribute( 'photo' );
  document.getElementById( 'viewImage' ).src = src;
  document.getElementById( 'viewImage' ).width = 400;
  document.getElementById( 'viewImage' ).height = 300}

function changeImageBig( e ) {
  var srcE = ( e.target ? e.target : e.srcElement );
  var src = srcE.getAttribute( 'photo' );
  document.getElementById( 'big' ).src = src;
}

function calcTypeDisplayChange( e ) {
  var srcE = ( e.target ? e.target : e.srcElement );
  var desttype = ( srcE.value == 'P' ? '' : '' );

  var targets = srcE.parentNode.getElementsByTagName( 'span' );
  for( var i = 0 ; i < targets.length ; i++ ) {
    if( targets[ i ].getAttribute( 'name' ) != 'calcTypeDisplay' ) continue;
    targets[ i ].innerHTML = desttype;
 }
}


function calcExe( e ) {
  var srcE = ( e.target ? e.target : e.srcElement );
  var ipts = srcE.parentNode.getElementsByTagName( 'input' );
  var src = null;
  var dest = null;
  var desttype = document.getElementsByName( 'calcType' )[0];

  for( var i = 0 ; i < ipts.length ; i++ ) {
    if( ipts[ i ].getAttribute( 'name' ) == 'calcSrc' ) src = ipts[ i ];
    if( ipts[ i ].getAttribute( 'name' ) == 'calcDest' ) dest = ipts[ i ];
  }

  if( !src) return;
  if( !dest) return;
  if( !desttype ) return;
  if( !/^[0-9]+.?[0-9]*$/.test( src.value ) ) return alert( 'ȯ  Է ּ' );

  if( desttype.value == 'P' ) {
    var result = ( parseFloat( src.value ) * 400 / 121 );
    dest.value = result.toFixed(1);
    return;
 } 
  else if( desttype.value == 'M' ) {
    var result = ( parseFloat( src.value ) * 121 / 400 );
    dest.value = result.toFixed(1);
    return;
 }
}

var globopObject;
var opIndex=0;
var cleared=true;
var direction=10;
function dynOpacity(opObject,stop) {
  if (stop) {
    clearInterval(window.tm);
    cleared=true;
    opIndex=10;
    return;
  }
  globopObject=opObject;
  if (opIndex>105) direction=-4;
  if (opIndex<100) direction=4;
  opIndex+=direction;
  globopObject.style.filter='alpha(opacity:' + opIndex + ')';
  if (cleared) {
    window.tm=setInterval("dynOpacity(globopObject,false);",1);
    cleared=false;
  }
}
function opacity(num) {
  if(num == 1) {
    dynOpacity(event.srcElement,false);
  }
  if(num == 2) {
    event.srcElement.style.filter="";
    dynOpacity(event.srcElement,true);
  }
}