createPopUp=function(){ 

    if(!window.opener){ 
          var as,i,popwin; 
          as=document.getElementsByTagName('a'); 
          for(i=0;i<as.length;i++){ 
               if( as[i].lang=='lt'){ 
                    popwin=function(){ 
                    	wt=770;
                    	ht=400;
                    	leftPos= (screen.width-wt)/2; 
						topPos = (screen.height-ht)/2;
                          
                          window.open(this.href,'','toolbars=no,resizable=yes,scrollbars=yes,left='+leftPos+',top='+topPos+',width='+wt+',height='+ht); 
                          return false; 
                    } 
                    as[i].onclick=popwin; 
                    as[i].onkeypress=popwin; 
               } 
          } 
    } 
    else { 
          var closePar,closeLink,closeText,closeId; 
          closeId='closewindow'; 
          closeLink=document.createElement('a'); 
          closeText=document.createTextNode('Close Window'); 
          closeLink.href='#'; 
          closeLink.appendChild(closeText); 
          closeLink.onclick=function()
{self.close();}; 
          closeLink.onkeypress=function(){self.close();}; 
          if(document.getElementById(closeId)){ 
               document.getElementById(closeId).appendChild(closeLink); 
          } 
          else{ 
               closePar=document.createElement('p'), 
               closePar.id=closeId; 
               closePar.appendChild(closeLink); 
               document.body.insertBefore(closePar,document.body.firstChild); 
          } 
    } 

} 
window.onload=createPopUp;