章丘做网站之左侧折叠菜单效果-章丘做网站

章丘做网站之左侧折叠菜单效果

2014-3-11 21:04:59 点击：

今天章丘做网站的过程中需要在页面的左侧设计一个折叠菜单效果，经过试验，下列代码可以实现：

.mainDiv

{

width:160px;

}

.topItem

{

width:160px;

height:22px;

cursor:pointer;

background: #467BF2;

text-decoration: none;

color: white;

font-weight:bold;

font-family:"GOTHIC";

}

.dropMenu

{

background:#D9D9D9;

border-top:1px solid #467BF2;

border-left:1px solid #92B1F8;

border-right:1px solid #92B1F8;

border-bottom:1px solid #92B1F8;

}

.subMenu

{

display:none;

}

.subItem

{

padding-left:5px;

cursor:pointer;

font-weight:bold;

text-decoration:none;

color:black;

}

.subItem a

{

text-decoration:none;

color:black;

}

.subItemOver

{

cursor:pointer;

color:blue;

text-decoration:underline;

font-weight:bold;

padding-left:5px;

}

.subItemOver a

{

color:blue;

}

.drop

{

border-left:1px solid black;

border-right:1px solid black;

}

</style>

var TIMER_SLIDE = null;

var OBJ_SLIDE;

var OBJ_VIEW;

var PIX_SLIDE = 10; //this is the amount of slide/DELAY_SLIDE

var NEW_PIX_VAL;

var DELAY_SLIDE = 30; //this is the time between each call to slide

var DIV_HEIGHT = 22; //value irrelevant

var SUB_MENU_NUM =0;

var RE_INIT_OBJ = null;

var bMenu = document.getElementById("curMenu");

var MainDiv,SubDiv

//DD added code

document.write('<div id="tempcontainer" class="mainDiv" style="visibility: hidden; position: absolute"></div>')

function Init(objDiv)

{

if (TIMER_SLIDE == null)

{

SUB_MENU_NUM = 0;

MainDiv = objDiv.parentNode;

SubDiv = MainDiv.getElementsByTagName("DIV").item(0);

SubDiv.onclick = SetSlide;

OBJ_SLIDE = MainDiv.getElementsByTagName("DIV").item(1)

OBJ_VIEW = OBJ_SLIDE.getElementsByTagName("DIV").item(0);

document.getElementById("tempcontainer").innerHTML=MainDiv.getElementsByTagName("DIV").item(2).innerHTML //DD added code

DIV_HEIGHT=document.getElementById("tempcontainer").offsetHeight //DD added code

for (i=0;i<OBJ_VIEW.childNodes.length;i++)

{

if (OBJ_VIEW.childNodes.item(i).tagName == "SPAN")

{

SUB_MENU_NUM ++;

OBJ_VIEW.childNodes.item(i).onmouseover= ChangeStyle;

OBJ_VIEW.childNodes.item(i).onmouseout= ChangeStyle;

}

NEW_PIX_VAL = parseInt(MainDiv.getAttribute("state"));

}

function SetSlide()

{

if (window.TIMER_SLIDE) clearInterval(TIMER_SLIDE) //DD added code

if (TIMER_SLIDE == null && this.parentNode == MainDiv)

TIMER_SLIDE = setInterval('RunSlide()', DELAY_SLIDE);

else

{

RE_INIT_OBJ = this;

setTimeout('ReInit()', 200);

}

function ReInit(obj)

{

Init(RE_INIT_OBJ);

TIMER_SLIDE = setInterval('RunSlide()', DELAY_SLIDE);

RE_INIT_OBJ = null;

}

function RunSlide()

{

if (OBJ_VIEW.getAttribute("state") == 0)

{

NEW_PIX_VAL += PIX_SLIDE;

OBJ_SLIDE.style.height = NEW_PIX_VAL;

if (NEW_PIX_VAL >= DIV_HEIGHT) //DD modified code

{

clearInterval(TIMER_SLIDE);

TIMER_SLIDE = null;

OBJ_VIEW.style.display = 'inline';

OBJ_VIEW.setAttribute("state","1")

MainDiv.setAttribute("state",NEW_PIX_VAL);

}

} else

{

OBJ_VIEW.style.display = 'none';

NEW_PIX_VAL -= PIX_SLIDE;

if(NEW_PIX_VAL > 0)OBJ_SLIDE.style.height = NEW_PIX_VAL;

if (NEW_PIX_VAL <= 0)

{

NEW_PIX_VAL = 0;

OBJ_SLIDE.style.height = NEW_PIX_VAL

clearInterval(TIMER_SLIDE);

TIMER_SLIDE = null;

OBJ_VIEW.setAttribute("state","0")

MainDiv.setAttribute("state",NEW_PIX_VAL);

}

function ChangeStyle()

{

if (this.className == this.getAttribute("classOut"))

this.className = this.getAttribute("classOver");

else

this.className = this.getAttribute("classOut");

}

</script>

</div>

<BR />

</div>

<BR />

</div>

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