function bluring(){ 
if(event.srcElement.tagName=="A"||event.srcElement.tagName=="IMG")
document.body.focus(); } 
document.onfocusin=bluring; 


function dkcom(d) {
for (i=1;i<=2;i++)
 {
 var dkd="PCD"+i
 var dkf="HomD"+i
 document.getElementById(dkd).style.background="url(newimg/ab_0"+i+".jpg)";
 document.getElementById(dkf).style.display="none";
 }
 document.getElementById('PCD'+d).style.background="url(newimg/ab_"+d+".jpg)";
 document.getElementById('HomD'+d).style.display="";
}