var textField=document.getElementById(des);
var selectionStart=textField.selectionStart;
var selectionEnd=textField.selectionEnd;
if(selectionStart != undefined && selectionEnd != undefined){
selectedText=textField.value.substring(selectionStart,selectionEnd);
}
if(selectedText==""){
alert("请选择需要添加链接的文字！");
return;
}
var hyperlinks=prompt("超链接地址：","");
if(hyperlinks!=null){
var replaceString="" + selectedText + "";
tmpStr=textField.value;
textField.value=tmpStr.substring(0,selectionStart)+replaceString+tmpStr.substring(selectionEnd,tmpStr.length);
}
}
else if((document.selection)&&(document.selection.type == "Text")){//IE中不需要ID
var range=document.selection.createRange();
var formerElement=range.parentElement();
if(formerElement.tagName!="TEXTAREA"){
alert("请在指定位置选择需要添加超链接的文字！");
return;
}
selectedText=range.text;
var hyperlinks=prompt("超链接地址：","");
if(hyperlinks!=null){
range.text="" + selectedText + "";
}
}
else{
alert("请选择需要添加链接的文字！");
return;
}
}
