mbDIV.style.width=document.body.scrollWidth+"px"; var loginDIV = document.getElementById("loginDIV"); var loginTopDIV = document.getElementById("loginTopDIV"); document.getElementById("button_1").onclick = function() { hidden("loginDIV"); hidden("mbDIV"); } dt_3.onclick = function() { loginDIV.style.top = document.documentElement.clientHeight/2-250+"px"; loginDIV.style.left = document.documentElement.clientWidth/2-300+"px"; show("loginDIV"); show("mbDIV") } /** *这里写的是拖动信息 * */ var tHeight,lWidth; function Down(e) { var event = window.event || e; tHeight = event.clientY - parseInt(loginDIV.style.top.replace(/px/,"")); lWidth = event.clientX - parseInt(loginDIV.style.left.replace(/px/,"")); document.onmousemove = Move; document.onmouseup = Up; } function Move(e) { var event = window.event || e; var top = event.clientY - tHeight; var left = event.clientX - lWidth; //判断 top 和 left 是否超出边界 top = top < 0 ? 0 : top; top = top > document.body.offsetHeight - 150 ? document.body.offsetHeight - 150 : top; left = left < 0 ? 0 : left; left = left > document.body.offsetWidth - 300 ? document.body.offsetWidth - 300 : left; loginDIV.style.top = top + "px"; loginDIV.style.left = left +"px"; } function Up() { document.onmousemove = null; } //--> �京轻工业机械厂