(function($){$.fn.grViewer=function(options){var defaults={zoomLimit:2,minLimit:700,renderScale:0.5};var options=$.extend(defaults,options);return this.each(function(){var imageZoom=$(this);imageZoom.width(2500);var originalWidth=imageZoom.width();imageZoom.width(originalWidth*options.renderScale);imageZoom.parent().css({'overflow':'hidden'});$(this).hide().fadeIn(600);$('#zoomerNav, .lnkdownloadrecord, #printrecord').fadeIn('slow');if($.browser.msie){$('.invert').fadeIn('slow');}
function widthError(){}
function minWidthError(){}
var move=function(event){if($(this).data('mousemove')){var changeX=event.clientX-$(this).data('mouseX');var changeY=event.clientY-$(this).data('mouseY');var position=$(this).position();var newX=position.left+changeX;var newY=position.top+changeY;$(this).css({left:newX,top:newY});$(this).data('mouseX',event.clientX);$(this).data('mouseY',event.clientY);event.preventDefault();}}
$(this).dblclick(function(event){var parentPosition=$(this).parent().position();var distancefromCentreX=($(this).parent().width()/2+parentPosition.left)-$(this).data('mouseX');var distancefromCentreY=($(this).parent().height()/2+parentPosition.top)-$(this).data('mouseY');if(distancefromCentreX<0&&distancefromCentreY<0){if(imageZoom.width()<=originalWidth*options.zoomLimit){$(this).animate({top:parseInt($(this).css('top'))-Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))-Math.abs(distancefromCentreX),width:$(this).width()+200},300);}else{$(this).animate({top:parseInt($(this).css('top'))-Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))-Math.abs(distancefromCentreX)},300);}}
if(distancefromCentreX>0&&distancefromCentreY>0){if(imageZoom.width()<=originalWidth*options.zoomLimit){$(this).animate({top:parseInt($(this).css('top'))+Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))+Math.abs(distancefromCentreX),width:$(this).width()+200},300);}else{$(this).animate({top:parseInt($(this).css('top'))+Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))+Math.abs(distancefromCentreX)},300);}}
if(distancefromCentreX<0&&distancefromCentreY>0){if(imageZoom.width()<=originalWidth*options.zoomLimit){$(this).animate({top:parseInt($(this).css('top'))+Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))-Math.abs(distancefromCentreX),width:$(this).width()+200},300);}else{$(this).animate({top:parseInt($(this).css('top'))+Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))-Math.abs(distancefromCentreX)},300);}}
if(distancefromCentreX>0&&distancefromCentreY<0){if(imageZoom.width()<=originalWidth*options.zoomLimit){$(this).animate({top:parseInt($(this).css('top'))-Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))+Math.abs(distancefromCentreX),width:$(this).width()+200},300);}else{$(this).animate({top:parseInt($(this).css('top'))-Math.abs(distancefromCentreY),left:parseInt($(this).css('left'))+Math.abs(distancefromCentreX)},300);}}
distancefromCentreX=0;distancefromCentreY=0;});$(this).mousedown(function(event){$(this).data('mousemove',true);$(this).data('mouseX',event.clientX);$(this).data('mouseY',event.clientY);event.preventDefault();});$(this).mouseup(function(){$(this).data('mousemove',false);});$(this).mouseout(function(){$(this).data('mousemove',false);});$(this).mouseout(move);$(this).mousemove(move);function increaseSize(){if(imageZoom.width()<=originalWidth*options.zoomLimit){imageZoom.stop(false,true).animate({width:imageZoom.width()+300,left:parseInt(imageZoom.css('left'))-150,top:parseInt(imageZoom.css('top'))-150},500);return false}
else{imageZoom.stop();widthError();return false}}
function decreaseSize(){if(imageZoom.width()>=options.minLimit){imageZoom.stop(false,true).animate({width:imageZoom.width()-300,left:parseInt(imageZoom.css('left'))+150,top:parseInt(imageZoom.css('top'))+150},500);if(parseInt(imageZoom.css('top'))>400){imageZoom.stop(false,false).css({top:parseInt(imageZoom.css('top'))});}
return false}
else{imageZoom.stop();minWidthError();return false}}
$('#btn_plus').click(function(){increaseSize();return false});$('#btn_minus').click(function(){decreaseSize();return false});imageZoom.bind('mousewheel',function(event,delta){if(delta>0){if(imageZoom.width()<=originalWidth*options.zoomLimit){imageZoom.stop(false,true).animate({width:imageZoom.width()+200,left:parseInt(imageZoom.css('left'))-100,top:parseInt(imageZoom.css('top'))-100},200);return false}
else{imageZoom.stop();widthError();return false}}
if(delta<0){if(imageZoom.width()>=options.minLimit){imageZoom.stop(false,true).animate({width:imageZoom.width()-200,left:parseInt(imageZoom.css('left'))+100,top:parseInt(imageZoom.css('top'))+100},200);if(parseInt(imageZoom.css('top'))>400){imageZoom.stop(false,false).css({top:parseInt(imageZoom.css('top'))});}
return false}
else{imageZoom.stop();minWidthError();return false}}})
function dnBoundryIsValid(){if(parseInt(imageZoom.css('top'))+Math.abs(imageZoom.height()-imageZoom.parent().height()+150)<0){return false;}
else{return true;}}
function upBoundryIsValid(){if(parseInt(imageZoom.css('top'))>(imageZoom.parent().height()-450)){return false;}
else{return true;}}
function leftBoundryIsValid(){if(parseInt(imageZoom.css('left'))>(imageZoom.parent().width()-450)){return false;}
else{return true;}}
function rightBoundryIsValid(){if(parseInt(imageZoom.css('left'))+Math.abs(imageZoom.width()-imageZoom.parent().width()+400)<0){return false;}
else{return true;}}
$('#btn_up').click(function(){if(upBoundryIsValid()){imageZoom.stop(false,true).animate({top:parseInt(imageZoom.css('top'))+200},500);return false}
else{return false;}});$('#btn_dn').click(function(){if(dnBoundryIsValid()){imageZoom.stop(false,true).animate({top:parseInt(imageZoom.css('top'))-200},500);return false}
else{return false;}});$('#btn_left').click(function(){if(leftBoundryIsValid()){imageZoom.stop(false,true).animate({left:parseInt(imageZoom.css('left'))+200},500);return false;}
else{return false;}});$('#btn_right').click(function(){if(rightBoundryIsValid()){imageZoom.stop(false,true).animate({left:parseInt(imageZoom.css('left'))-200},500);return false}
else{return false}});$('#btn_home').click(function(){imageZoom.stop(false,true).animate({width:originalWidth*options.renderScale,left:0,top:0},800);return false});if($.browser.msie){$('#invertimage').toggle(function(){imageZoom.css({'filter':'progid:DXImageTransform.Microsoft.BasicImage(invert=1)'});return false},function(){imageZoom.css({'filter':'none'});return false});}
else{return false}});};})(jQuery);