function check(form) {
var txt="center";
var fr="[center]";
var ba="[/center]";
var obj=form.code1;
if(obj.value.search("left")==-1 && obj.value.search("right")==-1 && obj.value.search(txt)==-1) {
	obj.value=fr+=obj.value+ba;
	}
else if(obj.value.search("right")!=-1) {
	obj.value=obj.value.replace("right","center");
	obj.value=obj.value.replace("/right","/center");
	}
else if(obj.value.search("left")!=-1) {
	obj.value=obj.value.replace("left","center");
	obj.value=obj.value.replace("/left","/center");
	}		
else {
    obj.value=obj.value.replace(fr,'');
	obj.value=obj.value.replace(ba,'');
    }
}
function check2(form) {
var txt="right";
var fr="[right]";
var ba="[/right]";
var obj=form.code1;
if(obj.value.search("center")==-1 && obj.value.search("left")==-1 && obj.value.search(txt)==-1) {
	obj.value=fr+=obj.value+ba;
	}
else if(obj.value.search("center")!=-1) {
	obj.value=obj.value.replace("center","right");
	obj.value=obj.value.replace("/center","/right");
	}
else if(obj.value.search("left")!=-1) {
	obj.value=obj.value.replace("left","right");
	obj.value=obj.value.replace("/left","/right");
	}	
else {
    obj.value=obj.value.replace(fr,'');
	obj.value=obj.value.replace(ba,'');
    }
}
function check3(form) {
var txt="left";
var fr="[left]";
var ba="[/left]";
var obj=form.code1;
if(obj.value.search("center")==-1 && obj.value.search("right")==-1 && obj.value.search(txt)==-1) {
	obj.value=fr+=obj.value+ba;
	}
else if(obj.value.search("center")!=-1) {
	obj.value=obj.value.replace("center","left");
	obj.value=obj.value.replace("/center","/left");
	}
else if(obj.value.search("right")!=-1) {
	obj.value=obj.value.replace("right","left");
	obj.value=obj.value.replace("/right","/left");
	}	
else {
    obj.value=obj.value.replace(fr,'');
	obj.value=obj.value.replace(ba,'');
    }
}