/*<script>*/
/* 
======================== 
函数：显示或隐藏层 
showDiv(divId_array,showLocality_array) 
参数说明： 
divId_array 所有要操作的层ID，用逗号分隔 
showLocality_array 所有要显示的层在参数DivIdArray所对应的位置。为“0”或空时全部显示，设为负数则全部隐藏。 
例如：showDiv('div3,div1,div2','2,3')为显示第二个(div1)和第三个层(div2)，第一个层(div3)将被隐藏。 
======================== 
*/ 
function showDiv(divId_array,showLocality_array) 
{ 
var div_array = new Array(); 
var locality_array = new Array(); 
var intLocality;//showLocality_array数组长度 
var intDiv;//div_array 数组长度 
var intTemp = 1;//临时变量 
var intTmp = 1;//临时变量 

//初始化 
if (divId_array) 
{ 
div_array = divId_array.split(","); 
}else{ 
intDiv = 0; 
} 
if (showLocality_array) 
{ 
locality_array = showLocality_array.split(","); 
intLocality = locality_array.length; 

for (var n = 0;n < intLocality;n++) 
{ 
intTemp *= locality_array[n]; 

} 
if (intTemp <= 0) 
{ 
intLocality = intTemp; 
}else{ 
intLocality = div_array.length; 

while (intLocality > 0) 
{ 
intLocality -= 1; 
document.getElementById(""+ div_array[intLocality] +"").style.display = "none"; 
} 
intLocality = 1; 
} 
}else{ 
intLocality = 0; 
} 

//显示指定层 
if (intDiv != 0 && intLocality >0) 
{ 
intDiv = div_array.length; 
intLocality = locality_array.length; 

//排序locality_array 数组 
for (var n = 0;n < intLocality;n++) 
{ 
intTemp = locality_array[n]; 

for (var m = n + 1;m < intLocality;m++) 
{ 
if (locality_array[n] > locality_array[m]) 
{ 
locality_array[n] = locality_array[m]; 
locality_array[m] = intTemp; 
intTemp = locality_array[n]; 
} 
} 
} 

intLocality = locality_array.length; 
intTemp = 0; 

// 
while (intTemp < intLocality) 
{ 
if ((locality_array[intTemp] - 1) < div_array.length) 
{ 
intTmp = locality_array[intTemp] - 1; 
document.getElementById(""+ div_array[intTmp] +"").style.display = "block"; 
} 

intTemp += 1; 
} 
} 
else if(intLocality == 0) 
{//显示所有层 
intLocality = div_array.length; 

while (intLocality > 0) 
{ 
intLocality -= 1; 
document.getElementById(""+ div_array[intLocality] +"").style.display = "block"; 
} 
}else{//隐藏所有层 
intLocality = div_array.length; 

while (intLocality > 0) 
{ 
intLocality -= 1; 
document.getElementById(""+ div_array[intLocality] +"").style.display = "none"; 
} 
} 
} 
/*
</script>

<div> 
<div><a onclick="showDiv('m1,m2,m3','1');">信息</a></div> 
<div><a onclick="showDiv('m1,m2,m3','2');">教育</a></div> 
<div><a onclick="showDiv('m1,m2,m3','3');">科技</a></div> 

<div id="m1">1的信息 </div> 
<div id="m2">2的教育 </div> 
<div id="m3">3的科技 </div> 

</div> 
*/