1.求一个东西到body的距离
function getPos(obj){
var l=0;
var t=0;
while(obj){
l+=obj.offsetLeft;
t+=obj.offsetTop;
obj=obj.offsetParent;
}
return {left:l,top:t};
}
2.获取非行间样式
function getStyle(obj,name){
return obj.currentStyle?obj.currentStyle[name]:getComputedStyle(obj,false)[name];
}
