function CatchKeyPress(KeyCode, Sender) 
    { 

        var btnToBeClicked = null; 
        RemoveEnterAndEscEvents(); 

        if(KeyCode == '13') 
        { 

			var ButtonName = Sender.getAttribute("TargetButton"); 

			btnToBeClicked = document.getElementById(ButtonName); 

			if(btnToBeClicked)
			{ 
				btnToBeClicked.click(); 
			} 
			else //for Master Pages
			{
			
			 btnToBeClicked = document.getElementById("ctl00_ImgSearch");
			if(btnToBeClicked)
			{ 
				btnToBeClicked.click(); 
			}
			}
		} 
	} 

function RemoveEnterAndEscEvents() 
{ 
	if (event.keyCode == 13 || event.keyCode == 27) 
	{ 
		event.cancelBubble = true; event.returnValue = false; 
	} 
}