Trying to get javascript to click a link when function is called

[jm999]

Hi. I'm trying to create a function that clicks a link when called. Its working in IE 7 but not in Firefox/Safari. here is the function:

function open_greybox() {
			  	document.getElementById("grey_link").click();
}

The error console for firefox is telling me:

Error: this.document.getElementById("grey_link").click is not a function

Does firefox not support "click()"? Is there a workaround? A hidden link has to be clicked by javascript when the function is called (from a flash movie).

Any help would be greatly appreciated!