function setZoomImageAndShow(source,height,width) {
	var img = document.getElementById('displayImage');
	var bg = document.getElementById('background');
	var offsets = getScrollXY();
	var yOff = offsets[1];
	bg.style.top=yOff+'px';
	img.src=source;
	img.style.height=height+'px';
	img.style.width=width+'px';
	img.style.top=yOff+(getHeight()/2)-(height/2)+'px';
	//img.style.marginTop='50%';
	img.style.marginLeft=(width/(-2))+'px';
	document.getElementById('imgb').style.display='block';
}
function getScrollXY() {
  var scrOfX = 0, scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
    scrOfX = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
    scrOfX = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
    scrOfX = document.documentElement.scrollLeft;
  }
  return [ scrOfX, scrOfY ];
}
function getHeight() {
  var myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myHeight = document.body.clientHeight;
  }
  return myHeight;
}
function checkBoxes() {
	if (document.getElementById('c1').checked && document.getElementById('c2').checked) {
		document.getElementById('continueLink').disabled=false;
	} else {
		document.getElementById('continueLink').disabled=true;
	}
}