摘要:        
<html> <head> <script type="text/javascript"> var t1=document.getElementById("txt1"); function isFocus(){ if(document.activeElement.id=='txt2'){ alert('txt2获得焦点'); } else{ alert('txt2未获得焦点'); } } ...    阅读全文
            
                posted @ 2012-04-25 15:48
BlueAmbition
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