I am trying to develop a card game using php and javascript. THe problem is that it is working perfectly fine in FF3 and IE7+, but fails to work in Opera and Chrome. And the worst thing is that da javascript debugger in opera gives no error and still the script stops working.

Code:
function push_game() { 
	var unixts = document.forms['checkmov']['lastmove'].value; 
	var Xhand = document.forms['checkmov']['hand'].value;  
	var Xmove = document.forms['checkmov']['tomove'].value; 
	var force = 0; 
	var url = document.location.href; 
	var xend = url.lastIndexOf("/") + 1; 
	var base_url = url.substring(0, xend); 
	thisurl = base_url + 'includes/push_game.php?ts='+unixts+'&h='+Xhand+'&m='+Xmove+'&f='+force;
	checkloadfile(thisurl, "js"); 
	thisurl = base_url + 'includes/auto_move.php'; 
	checkloadfile(thisurl, "js"); 
	setTimeout("push_game()", 1000); 
}
The two files mentioned above namely "push_game.php" and "automove.php" returns javascript according to the data sent to it. The data sent by these files is like:

Code:
document.getElementById('nameofelement').innerHTML = '<table width="1" height="5"><tr><td><img src="images/spacer.gif" width="1" height="5"></td></tr></table>';
Code:
function checkloadfile(filename, filetype){
	if (filesadded.indexOf("["+filename+"]")==-1){ 
		loadfile(filename, filetype); 
		filesadded+="["+filename+"]"; 
	} 
	else{ 
		replacefile(filename, filename, filetype); 
	}
} 
function loadfile(filename, filetype){ 
	if (filetype=="js"){ 
		var fileref=document.createElement('script') ; 
		fileref.setAttribute("type","text/javascript") ;
		fileref.setAttribute("src", filename) ;
	} 
	else if (filetype=="css"){ 
		var fileref=document.createElement("link"); 
		fileref.setAttribute("rel", "stylesheet") ; 
		fileref.setAttribute("type", "text/css") ;
		fileref.setAttribute("href", filename);
	}
	if (typeof fileref!="undefined") document.getElementsByTagName("head")[0].appendChild(fileref);
}
function createfile(filename, filetype){
	if (filetype=="js"){  
		var fileref=document.createElement('script') ; 
		fileref.setAttribute("type","text/javascript") ;
		fileref.setAttribute("src", filename) ; 
	}
	return fileref ; 
} 
function replacefile(oldfilename, newfilename, filetype){ 
	var targetelement=(filetype=="js")? "script" : (filetype=="css")? "link" : "none" ; 
	var targetattr=(filetype=="js")? "src" : (filetype=="css")? "href" : "none" ; 
	var allsuspects=document.getElementsByTagName(targetelement);  
	for (var i=allsuspects.length; i>=0; i--){  
		if (allsuspects[i] && allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(oldfilename)!=-1){
			var newelement=createfile(newfilename, filetype); 
                                  //DEBUG CODE
			$('#loading').text('Trying to reload: '+oldfilename);
                                  //END DEBUG CODE
			allsuspects[i].parentNode.replaceChild(newelement, allsuspects[i]);
		} 
	}	
}