下拉菜单全攻略之Javascript篇

//--------------- 生成每项下拉菜单内容 ------------//
function createSubLayer(num){
var subLayerName= layerName +num;
var subLayerLeft=(mainTableTdWidth*num)+mainTableCellpadding+mainTableBorder;
var subLayerList=eval("subLayer"+num);
var subLayerHttpList=eval("subLayerHttp"+num);
document.write("<div id='"+subLayerName+"' style='position:absolute; left:"+(subLayerLeft+sbuTabbleLeft)+"px; top:"+((mainTableBorder+mainTableCellspacing+mainTableCellpadding)*2+sbuTabbleTop)+"px; z-index:2; height: 24px; visibility: hidden' onmouseover=layervib('visible','"+num+"') onmouseout=layervib('visible','"+layerMax+"')>");
if(subLayerList.length!=0){
document.write("<table width='100px' border='"+subTableBorder+"' cellspacing='"+subTableCellpadding+"' cellpadding='"+subTableCellpadding+"' bgcolor='"+subTableBgcolor+"' bordercolor='"+subTableBordercolor+"' background='"+subTableBackgroundImg+"'")
for(h=0;h<subLayerList.length;h++){

document.write("<tr><td bgcolor='"+subTableTdBgcolor+"' width='100%' class='link'>&nbsp;<a href='"+ subLayerHttpList [h]+"' class='link'>"+subLayerList[h]+"</a>&nbsp;</td></tr>");
}
document.write("</table>");
}
document.write("</div>");

}

//------------------------------次菜单显隐控制--------------------------//
function layervib(type,num){
var H=type;
var temp=(H='visible'?'hidden':'visible')
for(var i=0;i<mainLayer.length;i++){
var E=eval('document.all.index'+i+'.style');
var H=eval(i);
if(i==num){E.visibility=type}else{E.visibility=temp};
}
}