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<! DOCTYPE html>
<Html>
<Head>
<Meta charset = "gb2312"/>
<Title> magnifiers </title>
<Style>
Img {vertical-align: bottom ;}
. Mod_zoom {overflow: hidden; zoom: 1 ;}
. Mod_zoom. p1 {float: left; position: relative; height: 350px; width: 350px; margin-right: 5px ;}
. Mod_zoom. p1. mask {position: absolute; left: 0; top: 0; width: 175px; height: 175px; background-color: # fede4f; opacity: 0.3; filter: alpha (opacity = 30); display: none ;}
. Mod_zoom. p2 {position: relative; width: 400px; height: 400px; overflow: hidden; display: none ;}
. Mod_zoom. p2. img {position: absolute; left: 0; top: 0 ;}
. Mod_zoom. ph {width: 100%; height: 350px; position: absolute; top: 0; left: 0; cursor: crosshair;
/* Background-color: red */
/* If you bind an event handler to it, the event will not be triggered if the background-color attribute is not set in IE */}
</Style>
</Head>
<Body>
<Div>
<Div class = "mod_zoom">
<Div class = "p1" id = "p1">
<Span class = "mask" id = "m"> </span>
<Span class = "ph" id = "eventproxy"> </span>
</Div>
<Div class = "p2" id = "p2">
</Div>
</Div>
</Div>
<Script>
Function PhotoZoomer (elements ){
This. mask = elements. mask; // mask
This. container = elements. container // source image container
This. originimg = elements. originimg; // source Image
This. eventproxy = elements. eventproxy;
This. bigContainer = elements. bigContainer; // large image container
This. bigimg = elements. bigimg; // large image
This. visible = false;
This. _ bind ();
}
PhotoZoomer. prototype = {
Display: function (style ){
Var self = this;
Self. mask. style. display = style;
Self. bigContainer. style. display = style;
},
// Calculate the position of the zoom in mask
Zoom: function (clientX, clientY ){
Var self = this,
// Location Ratio
Rate = {},
// Enlarge the maximum activity range of the mask.
Maxrange = {
OffsetLeft: self. container. offsetWidth-self. mask. offsetWidth,
OffsetTop: self. container. offsetHeight-self. mask. offsetHeight
},
// Mask left
Left = clientX-self. container. offsetLeft-self. mask. offsetWidth/2,
// Mask top
Top = clientY-self. container. offsetTop-self. mask. offsetHeight/2;
If (left <0 ){
Left = 0;
} Else if (left> maxrange. offsetLeft ){
Left = maxrange. offsetLeft;
}
If (top <0 ){
Top = 0;
} Else if (top> maxrange. offsetTop ){
Top = maxrange. offsetTop;
}
// Alert (maxrange. offsetTop );
Rate. left = left/maxrange. offsetLeft;
Rate. top = top/maxrange. offsetTop;
Self. mask. style. left = left + 'px ';
Self. mask. style. top = top + 'px ';
Self. bigimg. style. left =-rate. left * (self. bigimg. offsetWidth-self. bigContainer. offsetWidth) + "px ";
Self. bigimg. style. top =-rate. top * (self. bigimg. offsetHeight-self. bigContainer. offsetHeight) + "px ";
},
_ Bind: function (){
Var self = this;
Self. container. onmouseover = function (e ){
E = e | window. event;
Var target = e.tar ge | e. srcElement;
Self. display ("block ");
This. visible = true;
};
Self. container. onmouseout = function (e ){
E = e | window. event;
Var target = e.tar ge | e. srcElement;
Self. display ("none ");
This. visible = false;
};
Self. container. onmousemove = function (e ){
E = e | window. event;
If (! This. visible) return; // prevents miscalculation of element size
Self. zoom (e. clientX, e. clientY );
};
}
};
Function get (id ){
Return document. getElementById (id)
}
Var elements = {
Mask: get ("m "),
Container: get ("p1 "),
Originimg: get ("z1 "),
BigContainer: get ("p2 "),
Bigimg: get ("z2 "),
Eventproxy: get ("eventproxy ")
};
Var zoomer = new PhotoZoomer (elements );
// Alert (elements. container. offsetParent. tagName)
</Script>
</Body>
</Html>
<! DOCTYPE html>
<Html>
<Head>
<Meta charset = "gb2312"/>
<Title> magnifiers </title>
<Style>
Img {vertical-align: bottom ;}
. Mod_zoom {overflow: hidden; zoom: 1 ;}
. Mod_zoom. p1 {float: left; position: relative; height: 350px; width: 350px; margin-right: 5px ;}
. Mod_zoom. p1. mask {position: absolute; left: 0; top: 0; width: 175px; height: 175px; background-color: # fede4f; opacity: 0.3; filter: alpha (opacity = 30); display: none ;}
. Mod_zoom. p2 {position: relative; width: 400px; height: 400px; overflow: hidden; display: none ;}
. Mod_zoom. p2. img {position: absolute; left: 0; top: 0 ;}
. Mod_zoom. ph {width: 100%; height: 350px; position: absolute; top: 0; left: 0; cursor: crosshair;
/* Background-color: red */
/* If you bind an event handler to it, the event will not be triggered if the background-color attribute is not set in IE */}
</Style>
</Head>
<Body>
<Div>
<Div class = "mod_zoom">
<Div class = "p1" id = "p1">
<Span class = "mask" id = "m"> </span>
<Span class = "ph" id = "eventproxy"> </span>
</Div>
<Div class = "p2" id = "p2">
</Div>
</Div>
</Div>
<Script>
Function PhotoZoomer (elements ){
This. mask = elements. mask; // mask
This. container = elements. container // source image container
This. originimg = elements. originimg; // source Image
This. eventproxy = elements. eventproxy;
This. bigContainer = elements. bigContainer; // large image container
This. bigimg = elements. bigimg; // large image
This. visible = false;
This. _ bind ();
}
PhotoZoomer. prototype = {
Display: function (style ){
Var self = this;
Self. mask. style. display = style;
Self. bigContainer. style. display = style;
},
// Calculate the position of the zoom in mask
Zoom: function (clientX, clientY ){
Var self = this,
// Location Ratio
Rate = {},
// Enlarge the maximum activity range of the mask.
Maxrange = {
OffsetLeft: self. container. offsetWidth-self. mask. offsetWidth,
OffsetTop: self. container. offsetHeight-self. mask. offsetHeight
},
// Mask left
Left = clientX-self. container. offsetLeft-self. mask. offsetWidth/2,
// Mask top
Top = clientY-self. container. offsetTop-self. mask. offsetHeight/2;
If (left <0 ){
Left = 0;
} Else if (left> maxrange. offsetLeft ){
Left = maxrange. offsetLeft;
}
If (top <0 ){
Top = 0;
} Else if (top> maxrange. offsetTop ){
Top = maxrange. offsetTop;
}
// Alert (maxrange. offsetTop );
Rate. left = left/maxrange. offsetLeft;
Rate. top = top/maxrange. offsetTop;
Self. mask. style. left = left + 'px ';
Self. mask. style. top = top + 'px ';
Self. bigimg. style. left =-rate. left * (self. bigimg. offsetWidth-self. bigContainer. offsetWidth) + "px ";
Self. bigimg. style. top =-rate. top * (self. bigimg. offsetHeight-self. bigContainer. offsetHeight) + "px ";
},
_ Bind: function (){
Var self = this;
Self. container. onmouseover = function (e ){
E = e | window. event;
Var target = e.tar ge | e. srcElement;
Self. display ("block ");
This. visible = true;
};
Self. container. onmouseout = function (e ){
E = e | window. event;
Var target = e.tar ge | e. srcElement;
Self. display ("none ");
This. visible = false;
};
Self. container. onmousemove = function (e ){
E = e | window. event;
If (! This. visible) return; // prevents miscalculation of element size
Self. zoom (e. clientX, e. clientY );
};
}
};
Function get (id ){
Return document. getElementById (id)
}
Var elements = {
Mask: get ("m "),
Container: get ("p1 "),
Originimg: get ("z1 "),
BigContainer: get ("p2 "),
Bigimg: get ("z2 "),
Eventproxy: get ("eventproxy ")
};
Var zoomer = new PhotoZoomer (elements );
// Alert (elements. container. offsetParent. tagName)
</Script>
</Body>
</Html>
