IE6 css expression shims

ie6 css expression shims

ie6 maxHeight shim
.maxHeight {
  max-hegiht: 182px;
  _height: expression(this.scrollHeight > 182 ? '182' : this.scrollHeight); 
}

ie6 maxWidth shim
.maxWidth {
  max-width: 396px;
  _width: ~"expression(this.scrollWidth > 396 ? '396' : this.scrollWidth)";
}

.maxAndMinHeight{
  min-height: 49px;
  max-height: 200px;
  _height: ~"expression((function(self){if(self.scrollHeight>200){return'200px'}else if(self.scrollHeight<49){return'49px'}else{return self.scrollHeight}}(this)))";

/*

       (function (self) {

            if (this.scrollHeight > 200) {
                return '200px';
            } else if (this.scrollHeight < 49) {
                return '49px';
            } else {
                return this.scrollHeight;
            }

        }(this))
*/
}


.centerElementInPage {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 400px;
  height: 400px;
  background: red;
  margin: auto;
  _position: absolute;
  _left: expression(document.body.clientWidth/2- this.offsetWidth/2);
  _top: expression(document.documentElement.scrollTop/2 + document.documentElement.clientHeight/2 - this.offsetHeight/2);
  z-index: 200;
}

.mask {
  position: absolute;
  left: 0px;
  top: 0px;
  height: 100%;
  width: 100%;
  opacity: 0.7;
  z-index: 100;
  _top: expression(document.documentElement.scrollTop+ document.documentElement.clientHeight- this.offsetHeight);
  _height: expression(document.documentElement.clientHeight);
  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=50);
  background: black;
  zoom: 1;
}


/*
ie6 caculate posotion absolute width fromchildren

(function (self) {

    var nodes = self.childNodes;

    var width = 0;

    for(var i=0; i< nodes.length; i++) {

        if(nodes[i].nodeType == 1){
            width += nodes[i].scrollWidth;
        }

    }

    return width > 454 ? width : 454;

})(this);

*/

.positionAbsoluteAutoWidth {

  width: auto;
  _width: expression((function(a){var b=a.childNodes;var c=0;for(var i=0;i<b.length;i++){if(b[i].nodeType==1){c+=b[i].scrollWidth}}return c>454?c:454})(this));

}