立体感的按钮，而且可以带链接

<script>
document.onmouseover = doOver;
document.onmouseout  = doOut;
document.onmousedown = doDown;
document.onmouseup   = doUp;

function doOver() {
 var toEl = getReal(window.event.toElement, "className", "coolButton");
 var fromEl = getReal(window.event.fromElement, "className", "coolButton");
 if (toEl == fromEl) return;
 var el = toEl;
 
// alert(el);
 
// var cDisabled = el.getAttribute("cDisabled");
 var cDisabled = el.cDisabled;
// alert(cDisabled);
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 if (el.className == "coolButton")
  el.onselectstart = new Function("return false");
 
 if ((el.className == "coolButton") && !cDisabled) {
  makeRaised(el);
  makeGray(el,false);
 }
}

function doOut() {
 var toEl = getReal(window.event.toElement, "className", "coolButton");
 var fromEl = getReal(window.event.fromElement, "className", "coolButton");
 if (toEl == fromEl) return;
 var el = fromEl;

// var cDisabled = el.getAttribute("cDisabled");
 var cDisabled = el.cDisabled;
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present

 var cToggle = el.cToggle;
 toggle_disabled = (cToggle != null); // If CTOGGLE atribute is present

 if (cToggle && el.value) {
  makePressed(el);
  makeGray(el,true);
 }
 else if ((el.className == "coolButton") && !cDisabled) {
  makeFlat(el);
  makeGray(el,true);
 }

}

function doDown() {
 el = getReal(window.event.srcElement, "className", "coolButton");
 
 var cDisabled = el.cDisabled;
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 if ((el.className == "coolButton") && !cDisabled) {
  makePressed(el)
 }
}

function doUp() {
 el = getReal(window.event.srcElement, "className", "coolButton");
 
 var cDisabled = el.cDisabled;
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 if ((el.className == "coolButton") && !cDisabled) {
  makeRaised(el);
 }
}

function getReal(el, type, value) {
 temp = el;
 while ((temp != null) && (temp.tagName != "BODY")) {
  if (eval("temp." + type) == value) {
   el = temp;
   return el;
  }
  temp = temp.parentElement;
 }
 return el;
}

function findChildren(el, type, value) {
 var children = el.children;
 var tmp = new Array();
 var j=0;
 
 for (var i=0; i<children.length; i++) {
  if (eval("children[i]." + type + "==\"" + value + "\"")) {
   tmp[tmp.length] = children[i];
  }
  tmp = tmp.concat(findChildren(children[i], type, value));
 }
 
 return tmp;
}

function disable(el) {

 if (document.readyState != "complete") {
  window.setTimeout("disable(" + el.id + ")", 100); // If document not finished rendered try later.
  return;
 }
 
 var cDisabled = el.cDisabled;
 
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present

 if (!cDisabled) {
  el.cDisabled = true;
  
  el.innerHTML = '<span style="background: buttonshadow; width: 100%; height: 100%; text-align: center;">' +
      '<span style="filter:Mask(Color=buttonface) DropShadow(Color=buttonhighlight, OffX=1, OffY=1, Positive=0); height: 100%; width: 100%%; text-align: center;">' +
      el.innerHTML +
      '</span>' +
      '</span>';

  if (el.onclick != null) {
   el.cDisabled_onclick = el.onclick;
   el.onclick = null;
  }
 }
}

function enable(el) {
 var cDisabled = el.cDisabled;
 
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 if (cDisabled) {
  el.cDisabled = null;
  el.innerHTML = el.children[0].children[0].innerHTML;

  if (el.cDisabled_onclick != null) {
   el.onclick = el.cDisabled_onclick;
   el.cDisabled_onclick = null;
  }
 }
}

function addToggle(el) {
 var cDisabled = el.cDisabled;
 
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 var cToggle = el.cToggle;
 
 cToggle = (cToggle != null); // If CTOGGLE atribute is present

 if (!cToggle && !cDisabled) {
  el.cToggle = true;
  
  if (el.value == null)
   el.value = 0;  // Start as not pressed down
  
  if (el.onclick != null)
   el.cToggle_onclick = el.onclick; // Backup the onclick
  else
   el.cToggle_onclick = "";

  el.onclick = new Function("toggle(" + el.id +"); " + el.id + ".cToggle_onclick();");
 }
}

function removeToggle(el) {
 var cDisabled = el.cDisabled;
 
 cDisabled = (cDisabled != null); // If CDISABLED atribute is present
 
 var cToggle = el.cToggle;
 
 cToggle = (cToggle != null); // If CTOGGLE atribute is present
 
 if (cToggle && !cDisabled) {
  el.cToggle = null;

  if (el.value) {
   toggle(el);
  }

  makeFlat(el);
  
  if (el.cToggle_onclick != null) {
   el.onclick = el.cToggle_onclick;
   el.cToggle_onclick = null;
  }
 }
}

function toggle(el) {
 el.value = !el.value;
 
 if (el.value)
  el.style.background = "URL(/images/tileback.gif)";
 else
  el.style.backgroundImage = "";

// doOut(el); 
}

function makeFlat(el) {
 with (el.style) {
  background = "";
  border = "1px solid buttonface";
  padding      = "1px";
 }
}

function makeRaised(el) {
 with (el.style) {
  borderLeft   = "1px solid buttonhighlight";
  borderRight  = "1px solid buttonshadow";
  borderTop    = "1px solid buttonhighlight";
  borderBottom = "1px solid buttonshadow";
  padding      = "1px";
 }
}

function makePressed(el) {
 with (el.style) {
  borderLeft   = "1px solid buttonshadow";
  borderRight  = "1px solid buttonhighlight";
  borderTop    = "1px solid buttonshadow";
  borderBottom = "1px solid buttonhighlight";
  paddingTop    = "2px";
  paddingLeft   = "2px";
  paddingBottom = "0px";
  paddingRight  = "0px";
 }
}

function makeGray(el,b) {
 var filtval;
 
 if (b)
  filtval = "gray()";
 else
  filtval = "";

 var imgs = findChildren(el, "tagName", "IMG");
  
 for (var i=0; i<imgs.length; i++) {
  imgs[i].style.filter = filtval;
 }

}
 

document.write("<style>");
document.write(".coolBar {background: buttonface;border-top: 1px solid buttonhighlight; border-left: 1px solid buttonhighlight; border-bottom: 1px solid buttonshadow; border-right: 1px solid buttonshadow; padding: 2px; font: menu;}");
document.write(".coolButton {border: 1px solid buttonface; padding: 1px; text-align: center; cursor: default;}");
document.write(".coolButton IMG {filter: gray();}");
document.write("</style>");
</script>
<table class="coolBar">
<tr>
<td class="coolButton">
<font face="Verdana" size="3" onClick="window.location='www.3lian.com'"><b>3lian素材</b></font>
</td>
<td class="coolButton">
<font face="Verdana" size="2" onClick="window.location='www.sina.com.cn'"><b>新浪网</b></font>
</td>
</tr>
</table>
<div class="coolBar" style="width:100px">
<span class="coolButton" style="width:100px" onClick="window.location='www.3lian.com'"><img src="photo/home.gif"> <b>Welcome</b></span>
</div>