//Get window size		
function getSize() {
	var browserWidth = 0, browserHeight = 0;
	var defaultWidth = 756, defaultHeight = 490;
	if( typeof( window.innerWidth ) == 'number' ) {
	  //Non-IE
	  browserWidth = window.innerWidth;
	  browserHeight = window.innerHeight;
	} else if( document.documentElement &&
	    ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
	  //IE 6+ in 'standards-compliant mode'
	  browserWidth = document.documentElement.clientWidth;
	  browserHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
	  //IE 4 compatible
	  browserWidth = document.body.clientWidth;
	  browserHeight = document.body.clientHeight;
	}
	if (browserWidth <= 755) {
		browserWidth = defaultWidth;
		browserHeight = defaultHeight;
	}
	if (browserHeight <= 489) {
		browserWidth = defaultWidth;
		browserHeight = defaultHeight;
	}				
	adjustSize(defaultWidth,defaultHeight,browserWidth,browserHeight);								
}	
//Adjust size
function adjustSize(defaultWidth,defaultHeight,newWidth,newHeight) {
	var mainDiv = document.getElementById('main')				
	mainDiv.style.width = newWidth + 'px';
	mainDiv.style.height = newHeight + 'px';
}