//******** custom alert box ***************
function dialog(){
	this.error = function(){
		create_dialog();
	}
	this.confirm = function(){
		create_dialog();
	}
	this.info = function(){
		create_dialog()
	}
}
function create_dialog()
{
	//create container div element
	var divContainer = document.createElement('div');
	divContainer.setAttribute('id','ab_container');
	divContainer.setAttribute('class','ab_container');
	//create header div element
	var divHeader = document.createElement('div');
	divHeader.setAttribute('id','ab_header');
	divHeader.setAttribute('class','ab_header');
	//create content div element
	var divContent = document.createElement('div');
	divContent.setAttribute('id','ab_content');
	divContent.setAttribute('class','ab_content');
	//create footer div element
	var divFooter = document.createElement('div');
	divFooter.setAttribute('id','ab_footer');
	divFooter.setAttribute('class','ab_footer');
	
	//add divs to container
	divContainer.appendChild(divHeader);
	divContainer.appendChild(divContent);
	divContainer.appendChild(divFooter);
	document.getElementsByTagName('body')[0].appendChild(divContainer);
}