function setHeight(){
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {

		//Non-IE

		myWidth = window.innerWidth;

		myHeight = window.innerHeight;

	  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {

		//IE 6+ in 'standards compliant mode'

		myWidth = document.documentElement.clientWidth;

		myHeight = document.documentElement.clientHeight;

	  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {

		//IE 4 compatible

		myWidth = document.body.clientWidth;

		myHeight = document.body.clientHeight;

	  }
	  //alert (myWidth);
	  //alert (myHeight);
	  document.getElementById("main_table").style.height=myHeight;
	 // alert(document.getElementById("main_table").style.height);
}