Well don't know how quick it really is but it will save you some trouble.

function quickDiv(ddisp,ccontent,parent,postype,ttop,lleft,rright,bbottom,bgcol,bgimg,btype,bamt,borcolor){
this.newdiv = document.createElement('div');
this.ddisp = ddisp;
this.ccontent = ccontent;
this.parent = parent;
this.postype = postype;
this.ttop = ttop
this.lleft = lleft;
this.rright = rright;
this.bottom = bbottom;
this.bgcol = bgcol;
this.bgimg = bgimg;
this.btype = btype;
this.bamt = bamt;
this.borcolor = borcolor;
this.newdiv.style.display = this.ddisp;
if(postype){
this.newdiv.style.position = this.postype;
if(ttop){
this.newdiv.style.top = this.ttop;
}
if(lleft){
this.newdiv.style.left = this.lleft;
}
if(rright){
this.newdiv.style.right = this.rright;
}
if(bbottom){
this.newdiv.style.bottom = this.bbottom;
}}
if(bgcol){
this.newdiv.style.backgroundColor = this.bgcol;
}
if(bgimg){
this.newdiv.style.backgroundImage = 'url('+this.bgimg+')';
}
if(btype && bamt && borcolor){
this.newdiv.style.border = this.btype+' '+this.bamt+' '+this.borcolor;
}
if(this.ccontent){
if(this.ccontent.nodeType){
this.newdiv.appendChild(this.ccontent);
} else {
this.newdiv.innerHTML = this.ccontent;
}}}
quickDiv.prototype.insertInto = function(){
if(this.parent && this.parent.nodeType){
this.parent.appendChild(this.newdiv);
} else {
document.body.appendChild(this.newdiv);
}}

It's used like:

var myfastdiv = new quickDiv(properties);

Then to append it

myfastdiv.insertInto();

The parent doesn't have to exist if so the div gets appended to the body otherwise to the parent. The content of it can be either be a node or a string. Just goof around with it allows for a lot of things divs use. I did this kind of quick so tell me if something is screwed up. 'Bout it.