js之完全兼容ie与firefox的拖动层代码[测试好用]_javascript技巧

var posX;
var posY;
var popDiv;
var dragable;

function down(e){
popDiv = document.getElementById("pop-editor");
e = e || window.event; //如果是IE
posX = e.clientX - parseInt(popDiv.style.left);
posY = e.clientY - parseInt(popDiv.style.top);
dragable = true;
document.onmousemove = move;
}

function move(ev){
if(dragable == true){
ev = ev || window.event;//如果是IE
popDiv.style.left = (ev.clientX - posX) + "px";
popDiv.style.top = (ev.clientY - posY) + "px";
}
}

function up(){
dragable = false;
}