VML画线


<SCRIPT LANGUAGE="JavaScript"> 
  var x,y,a,b;  
  function drawline(fromX,fromY,toX,toY){   
  var strElement=   "<v:Line id='line_"+fromX+"_"+fromY+"_"+toX+"_"+toY+"' from='" + fromX + "," + fromY + "' to='" + toX + "," + toY + "' strokecolor='red'></v:Line>";   
  var newPoint = document.createElement(strElement);   
  document.getElementById("map").appendChild(newPoint);     
  } 
  function draw(){ 
    if(x==undefined&&b==undefined){x=window.event.x;y=window.event.y;return false;} 
    a=window.event.x;b=window.event.y; 
    drawline(x,y,a,b) 
    x=a;y=b; 
  } 
  function draws(){ 
  if(x==undefined&&b==undefined){return false;} 
  if(x==window.event.x&&b==window.event.y){return false;} 
  if(document.getElementById("TempLine")){document.getElementById("TempLine").outerHTML=""} 
  var strElement=   "<v:Line id='TempLine' from='" + x + "," + y + "' to='" + window.event.x + "," + window.event.y + "' strokecolor='red'></v:Line>";   
  var newPoint = document.createElement(strElement);   
  document.getElementById("map").appendChild(newPoint);     
  } 
</SCRIPT>   
<html xmlns:v="urn:schemas-microsoft-com:vml">   
<HEAD>   
<META http-equiv="Content-Type" content="text/html;Charset=gb2312">   
<title>vml实例</title>   
<STYLE>   
v\:*{behavior:url(#default#VML);}/*声明V为VML变量*/   
</STYLE>   
</HEAD>   
<BODY> 
<table border="1" align="center"> 
  <tr> 
    <td><div id="map" style="width:600px;height:500px;background-color:#cccccc;position:relative;" onmousedown="draw();" onmousemove="draws()"></div></td> 
  </tr> 
</table> 
</body>   
</html> 






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