瀏覽器中取得系統字体的問題
請教在瀏覽器即在javascript中怎麼樣取得系統的所有字體呢, 
 多謝了,急
------解决方案-------------------- <!--  
 宝玉 
 -->  
  <!DOCTYPE HTML PUBLIC  "-//W3C//DTD HTML 4.0 Transitional//EN ">  
  <HTML>  
  <HEAD>  
  <TITLE>  获取当前系统字体和排版样式  </TITLE>    
  <SCRIPT LANGUAGE= "JavaScript ">  
  <!-- 
 function getSystemFonts(){ 
 	var a=dlgHelper.fonts.count; 
 	var fArray = new Array(); 
 	var oDropDown = document.all.fonts; 
 	for (i = 1;i  < dlgHelper.fonts.count;i++){  
 		fArray[i] = dlgHelper.fonts(i); 
 		var aOptions = oDropDown.options;	 
 		var oOption = document.createElement( "OPTION "); 
 		aOptions.add(oOption);	 
 		oOption.text = fArray[i]; 
 		oOption.Value = i; 
 	}  
 }   
 function getBlockFormats(){ 
 	var a=dlgHelper.blockFormats.count; 
 	var fArray = new Array(); 
 	var oDropDown = document.all.formats; 
 	oDropDown.setAttribute( "id ", "FormatList "); 
 	for (i = 1;i  < dlgHelper.blockFormats.count;i++) 
 	{  
 		fArray[i] = dlgHelper.blockFormats(i); 
 		var aOptions = oDropDown.options;	 
 		var oOption = document.createElement( "OPTION "); 
 		aOptions.add(oOption);	 
 		oOption.text = fArray[i]; 
 		oOption.Value = i; 
 	}  
 } 
 //-->  
  </SCRIPT>  
  </HEAD>    
  <BODY onload= "getSystemFonts();getBlockFormats() ">  
 系统字体和排版样式 SystemFont and BlockFormats <BR>  
  <SELECT NAME= "fonts " onchange= "document.body.style.fontFamily = this.options[this.selectedIndex].text ">  
  </SELECT>  
   <SELECT NAME= "formats " onchange= "document.body.style.fontFamily = this.options[this.selectedIndex].text ">  
  </SELECT>  
  <OBJECT ID=dlgHelper CLASSID= "clsid:3050f819-98b5-11cf-bb82-00aa00bdce0b " WIDTH= "0px " HEIGHT= "0px ">  </OBJECT>  
  </BODY>  
  </HTML>