<!--
function Checkorderuser(obj){
if (obj == "") {
document.getElementById("span_id").innerHTML = "订花人不能为空"
}else{
document.getElementById("span_id").innerHTML = "书写正确"
}
}
//-->
</script>加一个else 试试，欢迎一起探讨。工作时间一直都在。
这个是改变span的值的代码，你可以借鉴一下的
<HTML><HEAD>
<META content="text/htmlcharset=gb2312" http-equiv=Content-Type>
<STYLE type=text/css>
TD {FONT-SIZE: 10.8pt}
BODY {FONT-SIZE: 10.8pt}
BUTTON {WIDTH: 5em}
</STYLE>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="dialog.js"></SCRIPT>
<SCRIPT language=JavaScript>
var sAction = URLParams['action']
var sTitle = ""
var color = ""
var oSelection
var oControl
var sRangeType
switch (sAction) {
case "forecolor": // 字体前景色
sTitle = "字体前景色"
oSelection = dialogArguments.eWebEditor.document.selection.createRange()
color = oSelection.queryCommandValue("ForeColor")
if (color) color = N2Color(color)
break
case "backcolor": // 字体背景色
sTitle = "字体背景色"
oSelection = dialogArguments.eWebEditor.document.selection.createRange()
color = oSelection.queryCommandValue("BackColor")
if (color) color = N2Color(color)
break
case "bgcolor": // 对象背景色
sTitle = "对象背景色"
oSelection = dialogArguments.eWebEditor.document.selection.createRange()
sRangeType = dialogArguments.eWebEditor.document.selection.type
if (sRangeType == "Control") {
oControl = GetControl(oSelection, "TABLE")
}else{
oControl = GetParent(oSelection.parentElement())
}
if (oControl) {
switch(oControl.tagName){
case "TD":
sTitle += " - 单元格"
break
case "TR":
case "TH":
sTitle += " - 表格行"
break
default:
sTitle += " - 表格"
break
}
color = oControl.bgColor
}else{
sTitle += " - 网页"
}
break
default: // 其它颜色框
if (URLParams['color']){
color = decodeURIComponent(URLParams['color'])
}
break
}
document.write("<TITLE>颜色选择（" + sTitle + "）</TITLE>")
// 默认显示值
if (!color) color = "#000000"
// 返回有背景颜色属性的对象
function GetParent(obj){
while(obj!=null &&obj.tagName!="TD" &&obj.tagName!="TR" &&obj.tagName!="TH" &&obj.tagName!="TABLE")
obj=obj.parentElement
return obj
}
// 返回标签名的选定控件
function GetControl(obj, sTag){
obj=obj.item(0)
if (obj.tagName==sTag){
return obj
}
return null
}
// 数值转为RGB16进制颜色格式
function N2Color(s_Color){
s_Color = s_Color.toString(16)
switch (s_Color.length) {
case 1:
s_Color = "0" + s_Color + "0000"
break
case 2:
s_Color = s_Color + "0000"
break
case 3:
s_Color = s_Color.substring(1,3) + "0" + s_Color.substring(0,1) + "00"
break
case 4:
s_Color = s_Color.substring(2,4) + s_Color.substring(0,2) + "00"
break
case 5:
s_Color = s_Color.substring(3,5) + s_Color.substring(1,3) + "0" + s_Color.substring(0,1)
break
case 6:
s_Color = s_Color.substring(4,6) + s_Color.substring(2,4) + s_Color.substring(0,2)
break
default:
s_Color = ""
}
return '#' + s_Color
}
// 初始值
function InitDocument(){
ShowColor.bgColor = color
RGB.innerHTML = color
SelColor.value = color
}
var SelRGB = color
var DrRGB = ''
var SelGRAY = '120'
var hexch = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F')
function ToHex(n) {
var h, l
n = Math.round(n)
l = n % 16
h = Math.floor((n / 16)) % 16
return (hexch[h] + hexch[l])
}
function DoColor(c, l){
var r, g, b
r = '0x' + c.substring(1, 3)
g = '0x' + c.substring(3, 5)
b = '0x' + c.substring(5, 7)
if(l >120){
l = l - 120
r = (r * (120 - l) + 255 * l) / 120
g = (g * (120 - l) + 255 * l) / 120
b = (b * (120 - l) + 255 * l) / 120
}else{
r = (r * l) / 120
g = (g * l) / 120
b = (b * l) / 120
}
return '#' + ToHex(r) + ToHex(g) + ToHex(b)
}
function EndColor(){
var i
if(DrRGB != SelRGB){
DrRGB = SelRGB
for(i = 0i <= 30i ++)
GrayTable.rows(i).bgColor = DoColor(SelRGB, 240 - i * 8)
}
SelColor.value = DoColor(RGB.innerText, GRAY.innerText)
ShowColor.bgColor = SelColor.value
}
</SCRIPT>
<SCRIPT event=onclick for=ColorTable language=JavaScript>
SelRGB = event.srcElement.bgColor
EndColor()
</SCRIPT>
<SCRIPT event=onmouseover for=ColorTable language=JavaScript>
RGB.innerText = event.srcElement.bgColor
EndColor()
</SCRIPT>
<SCRIPT event=onmouseout for=ColorTable language=JavaScript>
RGB.innerText = SelRGB
EndColor()
</SCRIPT>
<SCRIPT event=onclick for=GrayTable language=JavaScript>
SelGRAY = event.srcElement.title
EndColor()
</SCRIPT>
<SCRIPT event=onmouseover for=GrayTable language=JavaScript>
GRAY.innerText = event.srcElement.title
EndColor()
</SCRIPT>
<SCRIPT event=onmouseout for=GrayTable language=JavaScript>
GRAY.innerText = SelGRAY
EndColor()
</SCRIPT>
<SCRIPT event=onclick for=Ok language=JavaScript>
color = SelColor.value
if (!IsColor(color)){
alert('无效的颜色值！')
return
}
switch (sAction) {
case "forecolor":
dialogArguments.format('ForeColor', color)
window.returnValue = null
break
case "backcolor":
dialogArguments.format('BackColor', color)
window.returnValue = null
break
case "bgcolor":
if (oControl){
oControl.bgColor = color
}else{
dialogArguments.setHTML("<table border=0 cellpadding=0 cellspacing=0 width='100%' height='100%'><tr><td valign=top bgcolor='"+color+"'>"+dialogArguments.getHTML()+"</td></tr></table>")
}
window.returnValue = null
break
default:
window.returnValue = color
break
}
window.close()
</SCRIPT>
</HEAD>
<BODY bgColor=menu onload="InitDocument()">
<DIV align=center>
<CENTER>
<TABLE border=0 cellPadding=0 cellSpacing=10>
<TBODY>
<TR>
<TD>
<TABLE border=0 cellPadding=0 cellSpacing=0 id=ColorTable style="CURSOR: hand">
<SCRIPT language=JavaScript>
function wc(r, g, b, n){
r = ((r * 16 + r) * 3 * (15 - n) + 0x80 * n) / 15
g = ((g * 16 + g) * 3 * (15 - n) + 0x80 * n) / 15
b = ((b * 16 + b) * 3 * (15 - n) + 0x80 * n) / 15
document.write('<TD BGCOLOR=#' + ToHex(r) + ToHex(g) + ToHex(b) + ' height=8 width=8></TD>')
}
var cnum = new Array(1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0)
for(i = 0i <16i ++){
document.write('<TR>')
for(j = 0j <30j ++){
n1 = j % 5
n2 = Math.floor(j / 5) * 3
n3 = n2 + 3
wc((cnum[n3] * n1 + cnum[n2] * (5 - n1)),
(cnum[n3 + 1] * n1 + cnum[n2 + 1] * (5 - n1)),
(cnum[n3 + 2] * n1 + cnum[n2 + 2] * (5 - n1)), i)
}
document.writeln('</TR>')
}
</SCRIPT>
<TBODY></TBODY></TABLE></TD>
<TD>
<TABLE border=0 cellPadding=0 cellSpacing=0 id=GrayTable style="CURSOR: hand">
<SCRIPT language=JavaScript>
for(i = 255i >= 0i -= 8.5)
document.write('<TR BGCOLOR=#' + ToHex(i) + ToHex(i) + ToHex(i) + '><TD TITLE=' + Math.floor(i * 16 / 17) + ' height=4 width=20></TD></TR>')
</SCRIPT>
<TBODY></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER></DIV>
<DIV align=center>
<CENTER>
<TABLE border=0 cellPadding=0 cellSpacing=10>
<TBODY>
<TR>
<TD align=middle rowSpan=2>选中色彩
<TABLE border=1 cellPadding=0 cellSpacing=0 height=30 id=ShowColor width=40 bgcolor="">
<TBODY>
<TR>
<TD></TD></TR></TBODY></TABLE></TD>
<TD rowSpan=2>基色: <SPAN id=RGB></SPAN><BR>亮度: <SPAN
id=GRAY>120</SPAN><BR>代码: <INPUT id=SelColor size=7 value=""></TD>
<TD><BUTTON id=Ok type=submit>确定</BUTTON></TD></TR>
<TR>
<TD><BUTTON onclick=window.close()>取消</BUTTON></TD></TR></TBODY></TABLE></CENTER></DIV>
</BODY></HTML>
不知道这个符不符合你的要求
